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ɉɟɪɟɜɨɞ ɱɢɫɟɥ ɢɡ ɨɞɧɨɣ ɫɢɫɬɟɦɵ ɫɱɢɫɥɟɧɢɹ ɜ ɞɪɭɝɭɸ
151
0x234D
0xF4D
0x25
Ⱦɨɩɭɫɬɢɦɨ ɫɢɦɜɨɥɵ A, B, C, D, E, F ɡɚɦɟɧɹɬɶ ɫɬɪɨɱɧɵɦɢ ɛɭɤɜɚɦɢ a, b,
c, d, e, f. ȿɫɥɢ ɜ ɦɟɬɨɞɟ parseInt(x, s) ɹɜɧɨ ɭɤɚɡɚɧɚ ɲɟɫɬɧɚɞɰɚɬɟɪɢɱɧɚɹ ɫɢɫɬɟɦɚ
ɫɱɢɫɥɟɧɢɹ, ɬɨ ɞɨɩɭɫɬɢɦɨ ɩɪɢ ɜɜɨɞɟ ɲɟɫɬɧɚɞɰɚɬɟɪɢɱɧɵɯ ɱɢɫɟɥ ɨɩɭɫɤɚɬɶ ɩɪɟɮɢɤɫ 0x (ɧɨɥɶ ɢ ɢɤɫ).
ȿɫɥɢ ɜ ɬɟɤɫɬɨɜɨɟ ɩɨɥɟ ɜɜɟɫɬɢ ɲɟɫɬɧɚɞɰɚɬɟɪɢɱɧɨɟ ɱɢɫɥɨ 2F, ɬɨ ɜ ɪɟɡɭɥɶɬɚɬɟ ɩɪɟɨɛɪɚɡɨɜɚɧɢɹ ɛɭɞɟɬ ɩɨɥɭɱɟɧɨ ɞɟɫɹɬɢɱɧɨɟ ɱɢɫɥɨ 47.
Ʉɨɞ ɫɤɪɢɩɬɚ ɞɥɹ ɩɟɪɟɜɨɞɚ ɱɢɫɟɥ ɢɡ ɲɟɫɬɧɚɞɰɚɬɟɪɢɱɧɨɣ ɋɋ ɜ ɞɟɫɹɬɢɱɧɭɸ ɋɋ ɩɪɢɜɟɞɟɧ ɧɢɠɟ.
<script language="JavaScript">
function func2()
{
var a1=document.form2.inp2.value;
var a2=parseInt(a1,16);
alert ("Ⱦɟɫɹɬɢɱɧɵɣ ɷɤɜɢɜɚɥɟɧɬ ɷɬɨɝɨ ɲɟɫɬɧɚɞɰɚɬɟɪɢɱɧɨɝɨ ɱɢɫɥɚ " +
a2);
}
</script>
<form name="form2" >
<input type="text" name="inp2" value="" size="23"><br><br>
<input type="button" value="ɉɟɪɟɜɟɫɬɢ ɜ ɞɟɫɹɬɢɱɧɭɸ ɋɋ" onclick="javacsript:func2()">
</form>
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Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
11.8. Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
əɡɵɤ JavaScript ɩɨɡɜɨɥɹɟɬ ɫɮɨɪɦɢɪɨɜɚɬɶ ɜɨɫɟɦɶ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɤɨɧɫɬɚɧɬ ɢ ɜɵɱɢɫɥɢɬɶ ɲɟɫɬɧɚɞɰɚɬɶ ɪɚɡɥɢɱɧɵɯ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɮɭɧɤɰɢɣ. Ʉ ɦɚɬɟɦɚɬɢɱɟɫɤɢɦ ɮɭɧɤɰɢɹɦ ɨɬɧɟɫɟɧ ɬɚɤɠɟ ɝɟɧɟɪɚɬɨɪ ɫɥɭɱɚɣɧɵɯ ɱɢɫɟɥ.
Ɋɚɫɫɦɨɬɪɢɦ ɤɨɧɫɬɚɧɬɵ.
Ʉɨɧɫɬɚɧɬɵ Ɂɚɩɢɫɶ ɧɚ ɹɡɵɤɟ
JavaScript
ɉɨɫɬɨɹɧɧɚɹ ɗɣɥɟɪɚ (ɨɫɧɨɜɚɧɢɟ ɧɚɬɭɪɚɥɶɧɨɝɨ ɥɨɝɚɪɢɮɦɚ) Math.E
ɑɢɫɥɨ ʌ Math.PI
Ⱦɟɫɹɬɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ Math.LN10
Ⱦɜɨɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ Math.LN2
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 10 Math.LOG10E
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 2 Math.LOG2E
Ʉɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɞɜɭɯ Math.SQRT2
Ʉɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɨɞɧɨɣ ɜɬɨɪɨɣ Math.SQRT1_2
ɇɢɠɟ ɩɪɢɜɟɞɟɧ ɫɩɢɫɨɤ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɮɭɧɤɰɢɣ.
Ɏɭɧɤɰɢɢ Ɂɚɩɢɫɶ ɧɚ ɹɡɵɤɟ
JavaScript
ȼɨɡɜɟɞɟɧɢɟ ɜ ɫɬɟɩɟɧɶ xy Math.pow(x,y)
ɂɡɜɥɟɱɟɧɢɹ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ x
ȼɵɱɢɫɥɟɧɢɹ ɚɛɫɨɥɸɬɧɨɝɨ ɡɧɚɱɟɧɢɹ (ɦɨɞɭɥɹ) |x| Math.abs(x)
Ʉɨɫɢɧɭɫ cos x Math.cos(x)
Ⱥɪɤɤɨɫɢɧɭɫ arccos x Math.acos(x)
ɋɢɧɭɫ sin x Math.sin(x)
Ⱥɪɤɫɢɧɭɫ arcsin x Math.asin(x)
Ɍɚɧɝɟɧɫ tg x Math.tan(x)
Ⱥɪɤɬɚɧɝɟɧɫ arctg x Math.atan(x)
ȼɨɡɜɟɞɟɧɢɹ ɟ ɜ ɫɬɟɩɟɧɶ ex Math.exp(x)
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ Math.log(x)
Ɉɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ x ɜ ɛɨɥɶɲɭɸ ɫɬɨɪɨɧɭ Math.ceil(x)
Ɉɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ x ɜ ɦɟɧɶɲɭɸ ɫɬɨɪɨɧɭ Math.floor(x)
Ɉɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ x ɩɨ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ Math.round(x)
ȼɵɛɨɪ ɧɚɢɛɨɥɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ x ɢ y Math.max(x,y);
ȼɵɛɨɪ ɧɚɢɦɟɧɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ x ɢ y Math.min(x,y);
Ƚɟɧɟɪɚɬɨɪ ɫɥɭɱɚɣɧɵɯ ɱɢɫɟɥ Math.random()
Math.sqrt(x)
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Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
153
Ɋɚɫɫɦɨɬɪɢɦ ɫɤɪɢɩɬ, ɤɨɬɨɪɵɣ ɜɵɩɨɥɧɹɟɬ ɦɚɬɟɦɚɬɢɱɟɫɤɢɟ ɨɩɟɪɚɰɢɢ.
ɋɤɪɢɩɬ ɢɫɩɨɥɶɡɭɟɬ ɨɛɴɟɤɬ Math ɫ ɪɚɡɥɢɱɧɵɦɢ ɫɜɨɣɫɬɜɚɦɢ ɢ ɦɟɬɨɞɚɦɢ. ȼɨɫɟɦɶ ɫɜɨɣɫɬɜ ɩɨɡɜɨɥɹɸɬ ɫɮɨɪɦɢɪɨɜɚɬɶ ɜɨɫɟɦɶ ɤɨɧɫɬɚɧɬ (ɜ ɬɨɦ ɱɢɫɥɟ ɩɨɫɬɨɹɧɧɭɸ ɗɣɥɟɪɚ ɟ ɢ ɱɢɫɥɨ ʌ). ɋɟɦɧɚɞɰɚɬɶ ɦɟɬɨɞɨɜ ɨɛɴɟɤɬɚ Math ɩɪɟɞɧɚɡɧɚɱɟɧɵ ɞɥɹ ɮɨɪɦɢɪɨɜɚɧɢɹ ɲɟɫɬɧɚɞɰɚɬɢ ɷɥɟɦɟɧɬɚɪɧɵɯ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɮɭɧɤɰɢɣ
ɢ ɝɟɧɟɪɢɪɨɜɚɧɢɹ ɫɥɭɱɚɣɧɵɯ ɱɢɫɟɥ.
Ʉɨɧɫɬɚɧɬɵ
Ɂɧɚɱɟɧɢɟ ɤɨɧɫɬɚɧɬɵ ɟ = 2.718281828459045
Ɂɧɚɱɟɧɢɟ ɤɨɧɫɬɚɧɬɵ ʌ = 3.141592653589793
Ⱦɟɫɹɬɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ (ɟ) = 0.4342944819032518
Ⱦɜɨɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ (ɟ) = 1.4426950408889633
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 10 = 2.302585092994046
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 2 = 0.6931471805599453
ɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɞɜɭɯ = 1.4142135623730951
Ʉ
Ʉ
ɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɨɞɧɨɣ ɜɬɨɪɨɣ = 0.7071067811865476
Ɏɭɧɤɰɢɢ
Ɋɟɡɭɥɶɬɚɬ ɜɨɡɜɟɞɟɧɢɹ ɜ ɫɬɟɩɟɧɶ: 4
2
= 16
Ɋɟɡɭɥɶɬɚɬ ɢɡɜɥɟɱɟɧɢɹ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ ɢɡ 4: y = 2
Ɋɟɡɭɥɶɬɚɬ ɢɡɜɥɟɱɟɧɢɹ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ ɢɡ -9: y = NaN
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɛɫɨɥɸɬɧɨɝɨ ɡɧɚɱɟɧɢɹ -9: y = 9
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɤɨɫɢɧɭɫɚ ɧɭɥɹ ɪɚɞɢɚɧ: y =1
Ʉɨɫɢɧɭɫ 180 ɝɪɚɞɭɫɨɜ (ʌ ɪɚɞɢɚɧ): y = -1
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɤɨɫɢɧɭɫɚ ɧɭɥɹ : y =1.5707963267948965
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɫɢɧɭɫɚ ɧɭɥɹ ɪɚɞɢɚɧ: y = 0
ɋɢɧɭɫ 90 ɝɪɚɞɭɫɨɜ (ʌ/2 ɪɚɞɢɚɧ): y = 1
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɫɢɧɭɫɚ ɟɞɢɧɢɰɵ: y = 1.5707963267948965
Ɍɚɧɝɟɧɫ 45 ɝɪɚɞɭɫɨɜ (ʌ/4 ɪɚɞɢɚɧ): y = 0.9999999999999999
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɬɚɧɝɟɧɫɚ ɟɞɢɧɢɰɵ: y = 0.7853981633974483
Ɋɟɡɭɥɶɬɚɬ ɜɨɡɜɟɞɟɧɢɹ ɟ ɜ ɫɬɟɩɟɧɶ 2: y
ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɨɬ e
2
: y = 2
= 7.38905609893065
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɞɟɫɹɬɢɱɧɨɝɨ ɥɨɝɚɪɢɮɦɚ ɨɬ ɱɢɫɥɚ 100: y = 2
Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɞɜɨɢɱɧɨɝɨ ɥɨɝɚɪɢɮɦɚ ɨɬ ɱɢɫɥɚ 8: y = 3
Ɍɚɧɝɟɧɫ 45 ɝɪɚɞɭɫɨɜ (ɫ ɨɤɪɭɝɥɟɧɢɟɦ): y = 1
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,00123 ɜ ɛɨɥɶɲɭɸ ɫɬɨɪɨɧɭ: y = 2
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ -3.1234 ɜ ɛɨɥɶɲɭɸ ɫɬɨɪɨɧɭ: y = -3
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,00123 ɜ ɦɟɧɶɲɭɸ ɫɬɨɪɨɧɭ: y = 1
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ -3.1234 ɜ ɦɟɧɶɲɭɸ ɫɬɨɪɨɧɭ: y = -4
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,44 ɩɨ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ: y = 1
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Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,54 ɩɨ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ: y = 2
ȼɵɛɨɪ ɧɚɢɛɨɥɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ 4 ɢ 2: y = 4
ȼɵɛɨɪ ɧɚɢɦɟɧɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ 4 ɢ 2: y = 2
ȽȿɇȿɊȺɌɈɊ ɋɅɍɑȺɃɇɕɏ ɑɂɋȿɅ
Ɏɨɪɦɢɪɨɜɚɧɢɟ ɫɥɭɱɚɣɧɵɯ ɱɢɫɟɥ ɜ ɢɧɬɟɪɜɚɥɟ [0;1]: y =
0.628075369446297
Ʉɨɞ ɫɤɪɢɩɬɚ ɩɪɢɜɟɞɟɧ ɧɢɠɟ. ȼ ɪɚɫɱɟɬɚɯ ɛɵɥɨ ɢɫɩɨɥɶɡɨɜɚɧɨ ɬɪɢ ɰɟɥɵɯ
ɱɢɫɥɚ: x=4, z=2, v=-9.
<script language="JavaScript">
x=4;
z=2;
v=-9;
yE=Math.E;
yPi=Math.PI;
yLn10=Math.LN10;
yLn2=Math.LN2;
yLog10e=Math.LOG10E;
yLog2e=Math.LOG2E;
ySqrt3=Math.SQRT2;
ySqrt4=Math.SQRT1_2;
yPow=Math.pow(x,z);
ySqrt=Math.sqrt(x);
ySqrt2=Math.sqrt(v);
yAbs=Math.abs(v);
yCos=Math.cos(0);
yCos2=Math.cos(Math.PI);
yAcos=Math.acos(0);
ySin=Math.sin(0);
ySin2=Math.sin(Math.PI/2);
yAsin=Math.asin(1);
yTan=Math.tan(Math.PI/4);
yAtan=Math.atan(1);
yExp=Math.exp(z);
yLog=Math.log(yExp);
yLg=Math.log(100)/Math.log(10);
yLog2=Math.log(8)/Math.log(2);
yCeil=Math.ceil(yTan);
yCeil2=Math.ceil(1.000123);
yCeil3=Math.ceil(-3.1234);
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Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
155
yFloor=Math.floor(1.000123);
yFloor2=Math.floor(-3.1234);
yRound=Math.round(1.44);
yRound2=Math.round(1.54);
yMax=Math.max(x,z);
yMin=Math.min(x,z);
yRnd=Math.random();
document.write("ɄɈɇɋɌȺɇɌɕ"+"<br>");
document.write("Ɂɧɚɱɟɧɢɟ ɤɨɧɫɬɚɧɬɵ ɟ = "+yE+"<br>");
document.write("Ɂɧɚɱɟɧɢɟ ɤɨɧɫɬɚɧɬɵ π = "+yPi+"<br>");
document.write(" Ⱦɟɫɹɬɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ (ɟ) =
"+yLog10e+"<br>");
document.write(" Ⱦɜɨɢɱɧɵɣ ɥɨɝɚɪɢɮɦ ɩɨɫɬɨɹɧɧɨɣ ɗɣɥɟɪɚ (ɟ) =
"+yLog2e+"<br>");
document.write("ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 10 = "+yLn10+"<br>");
document.write(" ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɱɢɫɥɚ 2 = "+yLn2+"<br>");
document.write(" Ʉɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɞɜɭɯ = "+ySqrt3+"<br>");
document.write(" Ʉɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɨɞɧɨɣ ɜɬɨɪɨɣ =
"+ySqrt4+"<br><br>");
document.write("ɎɍɇɄɐɂɂ"+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɨɡɜɟɞɟɧɢɹ ɜ ɫɬɟɩɟɧɶ: 4<sup>2</sup> =
"+yPow+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɢɡɜɥɟɱɟɧɢɹ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ ɢɡ 4: y =
"+ySqrt+"<br>");
ent.write("Ɋɟɡɭɥɶɬɚɬ ɢɡɜɥɟɱɟɧɢɹ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ
docum
ɢɡ -9: y =
"+ySqrt2+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɛɫɨɥɸɬɧɨɝɨ ɡɧɚɱɟɧɢɹ -9: y =
"+yAbs+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɤɨɫɢɧɭɫɚ ɧɭɥɹ ɪɚɞɢɚɧ: y
="+yCos+"<br>");
document.write("Ʉɨɫɢɧɭɫ 180 ɝɪɚɞɭɫɨɜ (π ɪɚɞɢɚɧ): y =
"+yCos2+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɤɨɫɢɧɭɫɚ ɧɭɥɹ : y
="+yAcos+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɫɢɧɭɫɚ ɧɭɥɹ ɪɚɞɢɚɧ: y =
"+ySin+"<br>");
document.write("ɋɢɧɭɫ 90 ɝɪɚɞɭɫɨɜ (π/2 ɪɚɞɢɚɧ): y =
"+ySin2+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɫɢɧɭɫɚ ɟɞɢɧɢɰɵ: y =
"+yAsin+"<br>");
156
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Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
document.write("Ɍɚɧɝɟɧɫ 45 ɝɪɚɞɭɫɨɜ (π/4 ɪɚɞɢɚɧ): y =
"+yTan+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɚɪɤɬɚɧɝɟɧɫɚ ɟɞɢɧɢɰɵ: y =
"+yAtan+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɨɡɜɟɞɟɧɢɹ ɟ ɜ ɫɬɟɩɟɧɶ 2: y =
"+yExp+"<br>");
document.write("ɇɚɬɭɪɚɥɶɧɵɣ ɥɨɝɚɪɢɮɦ ɨɬ e<sup>2</sup>: y =
"+yLog+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɞɟɫɹɬɢɱɧɨɝɨ ɥɨɝɚɪɢɮɦɚ ɨɬ ɱɢɫɥɚ 100: y = "+yLg+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɜɵɱɢɫɥɟɧɢɹ ɞɜɨɢɱɧɨɝɨ ɥɨɝɚɪɢɮɦɚ ɨɬ ɱɢɫɥɚ
8: y = "+yLog2+"<br>");
document.write("Ɍɚɧɝɟɧɫ 45 ɝɪɚɞɭɫɨɜ (ɫ ɨɤɪɭɝɥɟɧɢɟɦ): y =
"+yCeil+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,00123 ɜ ɛɨɥɶɲɭɸ ɫɬɨɪɨɧɭ: y = "+yCeil2+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ -3.1234 ɜ ɛɨɥɶɲɭɸ ɫɬɨɪɨɧɭ: y = "+yCeil3+"<br>");
ent.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,00123
docum
ɜ ɦɟɧɶɲɭɸ ɫɬɨ-
ɪɨɧɭ: y = "+yFloor+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ -3.1234 ɜ ɦɟɧɶɲɭɸ ɫɬɨɪɨɧɭ: y = "+yFloor2+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,44 ɩɨ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ: y = "+yRound+"<br>");
document.write("Ɋɟɡɭɥɶɬɚɬ ɨɤɪɭɝɥɟɧɢɹ ɱɢɫɥɚ 1,54 ɩɨ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ: y = "+yRound2+"<br>");
document.write("ȼɵɛɨɪ ɧɚɢɛɨɥɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ 4 ɢ 2: y =
"+yMax+"<br>");
document.write("ȼɵɛɨɪ ɧɚɢɦɟɧɶɲɟɝɨ ɢɡ ɞɜɭɯ ɱɢɫɟɥ 4 ɢ 2: y =
"+yMin+"<br><br>");
document.write("ȽȿɇȿɊȺɌɈɊ ɋɅɍɑȺɃɇɕɏ ɑɂɋȿɅ"+"<br>");
ent.write("Ɏɨɪɦɢɪɨɜɚɧɢɟ ɫɥɭɱɚɣɧɵɯ ɱɢɫɟɥ ɜ ɢɧɬɟɪɜɚɥɟ [0;1]: y =
docum
"+yRnd+"<br>");
</script>
ɉɪɢɜɟɞɟɦ ɤɨɦɦɟɧɬɚɪɢɢ ɤ ɩɨɥɭɱɟɧɧɵɦ ɪɟɡɭɥɶɬɚɬɚɦ ɪɚɫɱɟɬɨɜ
.
ɂɡɜɥɟɱɟɧɢɟ ɤɜɚɞɪɚɬɧɨɝɨ ɤɨɪɧɹ ɢɡ ɱɢɫɥɚ -9 ɞɚɥɨ ɪɟɡɭɥɶɬɚɬ NaN. ɗɬɨ
ɨɡɧɚɱɚɟɬ, ɱɬɨ ɤɨɪɟɧɶ ɤɜɚɞɪɚɬɧɵɣ ɢɡ ɨɬɪɢɰɚɬɟɥɶɧɨɝɨ ɱɢɫɥɚ ɦɨɠɟɬ ɛɵɬɶ ɜɵɱɢɫɥɟɧ ɬɨɥɶɤɨ ɫ ɩɨɦɨɳɶɸ ɤɨɦɩɥɟɤɫɧɵɯ ɱɢɫɟɥ. ɋ ɩɨɦɨɳɶɸ ɜɟɳɟɫɬɜɟɧɧɵɯ
ɱɢɫɟɥ ɜ ɩɨɞɨɛɧɵɯ ɫɥɭɱɚɹɯ ɨɬɜɟɬ ɩɨɥɭɱɢɬɶ ɧɟɥɶɡɹ.
Ɇɟɬɨɞ Math.ceil(x) ɨɤɪɭɝɥɹɟɬ ɜɟɳɟɫɬɜɟɧɧɨɟ ɱɢɫɥɨ x ɞɨ ɛɥɢɠɚɣɲɟɝɨ
ɛɨɥɶɲɟɝɨ ɰɟɥɨ
ɝɨ ɱɢɫɥɚ. Ɇɟɬɨɞ
Math.floor(x) ɨɤɪɭɝɥɹɟɬ ɜɟɳɟɫɬɜɟɧɧɨɟ ɱɢɫɥɨ x
__________________________________________________________________________________
Ɇɚɬɟɦɚɬɢɱɟɫɤɢɟ ɮɭɧɤɰɢɢ ɢ ɤɨɧɫɬɚɧɬɵ
157
ɞɨ ɛɥɢɠɚɣɲɟɝɨ ɦɟɧɶɲɟɝɨ ɰɟɥɨɝɨ ɱɢɫɥɚ. Ɇɟɬɨɞ Math.roond(x) ɨɤɪɭɝɥɹɟɬ ɜɟɳɟɫɬɜɟɧɧɨɟ ɱɢɫɥɨ x ɩɨ ɫɬɚɧɞɚɪɬɧɵɦ ɩɪɚɜɢɥɚɦ ɚɪɢɮɦɟɬɢɤɢ (ɟɫɥɢ ɞɪɨɛɧɚɹ
ɱɚɫɬɶ ɜɟɳɟɫɬɜɟɧɧɨɝɨ ɱɢɫɥɚ ɛɨɥɶɲɟ ɢɥɢ ɪɚɜɧɚ 0,5, ɬɨ ɱɢɫɥɨ ɨɤɪɭɝɥɹɟɬɫɹ ɞɨ
ɛɥɢɠɚɣɲɟɝɨ ɛɨɥɶɲɟɝɨ ɰɟɥɨɝɨ ɱɢɫɥɚ).
ȼ ɫɨɫɬɚɜɟ ɹɡɵɤɚ JavaScript ɢɦɟɟɬɫɹ ɮɭɧɤɰɢɹ ɞɥɹ ɜɵɱɢɫɥɟɧɢɹ ɧɚɬɭɪɚɥɶɧɨɝɨ ɥɨɝɚɪɢɮɦɚ. ȼ ɫɥɭɱɚɟ ɧɟɨɛɯɨɞɢɦɨɫɬɢ ɜɵɱɢɫɥɟɧɢɹ ɥɨɝɚɪɢɮɦɚ ɩɨ
ɥ
ɞɪɭɝɨɦɭ ɨɫɧɨɜɚɧɢɸ (ɧɚɩɪɢɦɟɪ, ɚ) ɫɥɟɞɭɟɬ ɜɨɫɩɨɥɶɡɨɜɚɬɶɫɹ ɮɨɪɦɭ
(x)=log(x)/log(a).
log
a
ɨɣ:
Ⱦɥɹ ɩɨɧɢɦɚɧɢɹ ɪɟɡɭɥɶɬɚɬɨɜ ɜɵɱɢɫɥɟɧɢɣ ɫ ɩɨɦɨɳɶɸ ɬɪɢɝɨɧɨɦɟɬɪɢɱɟɫɤɢɯ ɮɭɧɤɰɢɣ ɧɭɠɧɨ ɩɨɦɧɢɬɶ, ɱɬɨ ɜ ɷɬɢɯ ɮɭɧɤɰɢɹɯ ɚɪɝɭɦɟɧɬ ɜɵɪɚɠɚɟɬɫɹ ɜ
ɪɚɞɢɚɧɚɯ. Ⱦɥɹ ɩɟɪɟɯɨɞɚ ɨɬ ɝɪɚɞɭɫɨɜ (grad) ɤ ɪɚɞɢɚɧɚɦ (rad) ɫɥɟɞɭɟɬ ɜɨɫɩɨɥɶɡɨɜɚɬɶɫɹ ɮɨɪɦɭɥɨɣ:
rad=grad·ʌ/180.
ɋ ɭɱɟɬɨɦ ɫɤɚɡɚɧɧɨɝɨ ɫɬɚɧɟɬ ɛɨɥɟɟ ɩɪɢɜɵɱɧɵɦ ɩɨɥɭɱɟɧɧɵɣ ɪɟɡɭɥɶɬɚɬ:
ɚɪɤɬɚɧɝɟɧɫ ɟɞɢɧɢɰɵ ɪɚɜɟɧ ɫɨɪɨɤɚ ɩɹɬɢ ɝɪɚɞɭɫɚɦ (ɜ ɪɚɞɢɚɧɚɯ ɨɬɜɟɬ ɪɚɜɟɧ
0.7853981633974483).
Ɂɚɦɟɬɢɦ, ɱɬɨ ɜɜɟɞɟɧɧɵɟ ɜ ɫɨɫɬɚɜ JavaScript ɤɨɧɫɬɚɧɬɵ ɧɟ ɹɜɥɹɸɬɫɹ
ɥɧɨ
ɣ ɧɟɨɛɯɨɞɢɦɨɫɬɶɸ. Ɉɧɢ ɦɨɝɭɬ ɛɵɬɶ ɜɵɱɢɫɥɟɧɵ ɫ ɩɨɦɨɳɶɸ ɢɦɟɸɳɢɯ-
ɩɨ
ɫɹ ɮɭɧɤɰɢɣ. ɇɚɩɪɢɦɟɪ, ɩɨɫɬɨɹɧɧɭɸ ɗɣɥɟɪɚ ɦɨɠɧɨ ɜɵɱɢɫɥɢɬɶ ɫ ɩɨɦɨɳɶɸ
ɜɵɪɚɠɟɧɢɹ Math.exp(1), ɚ ɱɢɫɥɨ ʌ ɫ ɩɨɦɨɳɶɸ ɮɨɪɦɭɥɵ 4·Math.atan(1). Ɋɟɡɭɥɶɬɚɬɵ ɜɵɱɢɫɥɟɧɢɹ ɷɬɢɯ ɤɨɧɫɬɚɧɬ ɩɪɢɜɟɞɟɧɵ ɧɢɠɟ.
ɉɨɫɬɨɹɧɧɚɹ ɗɣɥɟɪɚ: e = 2.718281828459045
ɑɢɫɥɨ ʌ = 3.141592653589793
158
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Ɋɟɝɭɥɹɪɧɵɟ ɰɢɤɥɵ
11.9. Ɋɟɝɭɥɹɪɧɵɟ ɰɢɤɥɵ
Ɋɟɝɭɥɹɪɧɵɟ ɰɢɤɥɵ ɩɨɡɜɨɥɹɸɬ ɬɚɤ ɨɪɝɚɧɢɡɨɜɚɬɶ ɜɵɱɢɫɥɢɬɟɥɶɧɵɣ ɩɪɨɰɟɫɫ, ɱɬɨ ɡɚɪɚɧɟɟ ɦɨɠɧɨ ɨɩɪɟɞɟɥɢɬɶ, ɫɤɨɥɶɤɨ ɪɚɡ ɛɭɞɭɬ ɜɵɩɨɥɧɟɧɵ ɨɩɟɪɚɰɢɢ,
ɪɚɡɦɟɳɟɧɧɵɟ ɜ ɬɟɥɟ ɰɢɤɥɚ. Ɋɟɝɭɥɹɪɧɵɟ ɰɢɤɥɵ ɱɚɫɬɨ ɢɫɩɨɥɶɡɭɸɬɫɹ ɞɥɹ ɬɚɛɭɥɹɰɢɢ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɮɭɧɤɰɢɣ. ɉɪɢɦɟɪɨɦ ɦɨɝɭɬ ɫɥɭɠɢɬɶ ɢɡɜɟɫɬɧɵɟ ɬɚɛɥɢɰɵ Ȼɪɚɞɢɫɚ. Ⱦɥɹ ɨɪɝɚɧɢɡɚɰɢɢ ɪɟɝɭɥɹɪɧɵɯ ɰɢɤɥɨɜ ɫɥɭɠɢɬ ɨɩɟɪɚɬɨɪ for .
Ɋɚɫɫɦɨɬɪɢɦ ɩɪɨɫɬɟɣɲɢɣ ɪɟɝɭɥɹɪɧɵɣ ɰɢɤɥ, ɤɨɬɨɪɵɣ ɜɵɩɨɥɧɹɟɬ ɫɭɦɦɢɪɨɜɚɧɢɟ ɰɟɥɵɯ ɱɢɫɟɥ ɨɬ 1 ɞɨ 10 (ɜɤɥɸɱɢɬɟɥɶɧɨ) ɫ ɩɨɦɨɳɶɸ ɨɩɟɪɚɬɨɪɚ for.
Ⱦɥɹ ɡɚɩɭɫɤɚ ɫɤɪɢɩɬɚ ɞɨɫɬɚɬɨɱɧɨ ɩɪɨɜɟɫɬɢ ɦɵɲɤɨɣ ɩɨ ɤɧɨɩɤɟ "ȼɵɱɢɫɥɢɬɶ".
Ɋɚɫɫɦɨɬɪɢɦ ɤɨɞ ɞɚɧɧɨ
<script language="JavaScript">
function Fcikly() {
var nac=1;
var fin=11;
var sum
m=0;
var i=1;
for(i=nac; i<fin; i++)
{
summ=summ+i; //Ɍɟɥɨ ɰɢɤɥɚ
}
alert("ɋɭɦɦɚ ɱɢɫɟɥ ɨɬ 1 ɞɨ 10 ɪɚɜɧɚ " + summ);
}
</script>
<input type="button" value="ȼɵɱɢɫɥɢɬɶ" onmouseover="Fcikly()">
Ɂɚɩɭɫɤɚɟɬɫɹ ɫɤɪɢɩɬ ɩɪɢ ɧɚɫɬɭɩɥɟɧɢɢ ɫɨɛɵɬɢɹ onmouseover (ɩɨɩɚɞɚɧɢɟ
ɤɭɪɫɨɪɚ ɧɚ ɩɥɨɳɚɞɶ ɤɧɨɩɤɢ). ɗɬɨ ɫɨɛɵɬɢɟ ɜɵɡɵɜɚɟɬ ɫɪɚɛɚɬɵɜɚɧɢɟ ɨɛɪɚɛɨɬɱɢɤɚ - ɮɭɧɤɰɢɢ ɫ ɢɦɟɧɟɦ Fcikly. Ɏɭɧɤɰɢɹ ɨɛɴɹɜɥɹɟɬ ɢɫɩɨɥɶɡɭɟɦɵɟ ɩɟɪɟɦɟɧɧɵɟ ɢ ɡɚɞɚɟɬ ɢɦ ɧɚɱɚɥɶɧɵɟ ɡɧɚɱɟɧɢɹ. ɉɟɪɟɦɟɧɧɚɹ nac ɨɩɪɟɞɟɥɹɟɬ ɩɟɪɜɨɟ
ɱɢɫɥɨ, ɫ ɤɨɬɨɪɨɝ
ɨ ɧɚɱɢɧɚɟɬɫɹ ɫɭɦɦɢɪɨɜɚɧɢɟ. ɉɟɪɟɦɟɧɧɚɹ fin ɭɤɚɡɵɜɚɟɬ ɧɚ
ɩɨɫɥɟɞɧɟɟ ɱɢɫɥɨ, ɞɨ ɤɨɬɨɪɨɝ
summ ɛɭɞɟɬ ɧɚɤɚɩɥɢɜɚɬɶ ɪɟɡɭɥɶɬɚɬ, ɩɨɷɬɨɦɭ ɧɚɱɚɥɶɧɨɟ ɡɧɚɱɟɧɢɟ ɩɪɢɪɚɜɧɢɜɚɟɬɫɹ ɤ ɧɭɥɸ. Ⱦɥɹ ɬɨɝɨ ɱɬɨɛɵ ɜ ɫɭɦɦɭ ɜɨɲɥɨ ɱɢɫɥɨ 10, ɭɫɥɨɜɢɟɦ ɡɚɜɟɪɲɟɧɢɹ ɪɚɛɨɬɵ ɰɢɤɥɚ ɜɵɛɪɚɧɨ ɫɨɨɬɧɨɲɟɧɢɟ i<11. ɐɢɤɥ ɧɚɱɢɧɚɟɬ ɪɚɛɨɬɭ ɩɪ
ɧɚɱɚɥɶɧɨ
ɦ ɡɧɚɱɟɧɢɢ ɩɚɪɚɦɟɬɪɚ ɰɢɤɥɚ i = 1. ɋ ɤɚɠɞɵɦ ɩɪɨɯɨɞɨɦ ɬɟɥɚ ɰɢɤɥɚ
ɩɚɪɚɦɟɬɪ ɰɢɤɥɚ i ɭɜɟɥɢɱɢɜɚɟɬɫɹ ɧɚ ɟɞɢɧɢɰɭ ɞɨ ɬɟɯ ɩɨɪ, ɩɨɤɚ ɧɟ ɞɨɫɬɢɝɧɟɬ
ɡɧɚɱɟɧɢɹ i = fin.
ɗɬɭ ɠɟ ɡɚɞɚɱɭ (ɫɭɦɦɢɪɨɜɚɧɢɟ ɰɟɥɵɯ ɱɢɫɟɥ ɨɬ 1 ɞɨ 10) ɦɨɠɧɨ ɪɟɲɢɬɶ ɫ
ɩɨɦɨɳɶɸ ɨɩɟɪɚɬɨɪɚ while. ȼɧɟɲɧɟ ɞɟɣɫɬɜɢɟ ɷɬɢɯ ɞɜɭɯ ɫɤɪɢɩɬɨɜ ɧɢɱɟɦ ɧɟ
ɝɨ ɫɤɪɢɩɬɚ.
ɨ ɜɟɞɟɬɫɹ ɫɭɦɦɢɪɨɜɚɧɢɟ ɱɢɫɟɥ. ɉɟɪɟɦɟɧɧɚɹ
ɢ
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Ɋɟɝɭɥɹɪɧɵɟ ɰɢɤɥɵ
159
ɨɬɥɢɱɚɟɬɫɹ. ȼɧɭɬɪɟɧɧɟ ɨɬɥɢɱɢɟ ɫɤɪɢɩɬɨɜ ɫɨɫɬɨɢɬ ɜ ɬɨɦ, ɱɬɨ ɜɬɨɪɨɣ ɰɢɤɥ
ɩɪɟɞɫɬɚɜɥɹɟɬ ɫɨɛɨɣ ɰɢɤɥ ɫ ɩɪɟɞɭɫɬɚɧɨɜɤɨɣ (ɰɢɤɥ ɉɈɄȺ). ɋ ɩɨɦɨɳɶɸ ɜɵɪɚɠɟɧɢɹ, ɡɚɩɢɫɚɧɧɨɝɨ ɜ ɫɤɨɛɤɚɯ (k<11), ɩɪɨɢɫɯɨɞɢɬ ɩɪɨɜɟɪɤɚ ɭɫɥɨɜɢɹ ɡɚɜɟɪɲɟɧɢɹ ɰɢɤɥɢɱɟɫɤɨɝɨ ɩɪɨɰɟɫɫɚ. ɉɨɤɚ ɜɵɪɚɠɟɧɢɟ, ɡɚɩɢɫɚɧɧɨɟ ɜ ɤɪɭɝɥɵɯ ɫɤɨɛɤɚɯ
ɢɫɬɢɧɧɨ, ɛɭɞɭɬ ɜɵɩɨɥɧɹɬɶɫɹ ɜɵɪɚɠɟɧɢɹ, ɩɪɢɧɚɞɥɟɠɚɳɢɟ ɬɟɥɭ ɰɢɤɥɚ. Ʉɨɝɞɚ
ɭɫɥɨɜɢɟ ɫɬɚɧɟɬ ɥɨɠɧɵɦ, ɛɭɞɟɬ ɜɵɩɨɥɧɟɧɚ ɩɟɪɜɚɹ ɫɬɪɨɤɚ, ɪɚɫɩɨɥɨɠɟɧɧɚɹ ɡɚ
ɢ
ɡɚɤɪɵɜɚɸɳɟɣ ɬɟɥɨ ɰɢɤɥɚ ɮ
ɝɭɪɧɨɣ ɫɤɨɛɤɨɣ. Ⱦɥɹ ɡɚɩɭɫɤɚ ɫɤɪɢɩɬɚ ɞɨɫɬɚɬɨɱɧɨ
ɤɨɫɧɭɬɶɫɹ ɤɭɪɫɨɪɨɦ ɤɧɨɩɤɢ "ȼɵɱɢɫɥɢɬɶ".
Ɍɟɤɫɬ ɩɪɨɝɪɚɦɦɵ ɩɪɢɜɟɞɟɧ ɧɢɠɟ.
<script language="JavaScript">
function Fcikly2() {
var summ2=0;
var k=1;
while (k<11)
{
summ2=summ2+k; //Ɍɟɥɨ ɰɢɤɥɚ
k=k+1;
}
alert("ɋɭɦɦɚ ɱɢɫɟɥ ɨɬ 1 ɞɨ 10 ɪɚɜɧɚ " + summ2);
}
</script>
<input type="button" value="ȼɵɱɢɫɥɢɬɶ" onmouseover="Fcikly2()">
160
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Ɉɩɟɪɚɬɨɪɵ ɜɟɬɜɥɟɧɢɹ
11.10. Ɉɩɟɪɚɬɨɪɵ ɭɫɥɨɜɧɨɣ ɩɟɪɟɞɚɱɢ ɭɩɪɚɜɥɟɧɢɹ
if-else(cond) ɢ switch(x)
ɇɚɡɜɚɧɢɟ ɨɩɟɪɚɬɨɪɚ if-else (cond) ɝɨɜɨɪɢɬ ɨ ɬɨɦ, ɱɬɨ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ
ɜɵɩɨɥɧɟɧɢɹ ɧɟɤɨɬɨɪɨɝɨ ɭɫɥɨɜɢɹ ɜɟɬɜɥɟɧɢɹ (cond) ɪɟɚɥɢɡɭɟɬɫɹ ɥɢɛɨ ɨɞɢɧ
ɮɪɚɝɦɟɧɬ ɩɪɨɝɪɚɦɦɵ, ɥɢɛɨ ɞɪɭɝɨɣ. ȼ ɩɟɪɟɜɨɞɟ ɫ ɚɧɝɥɢɣɫɤɨɝɨ ɹɡɵɤɚ ɮɪɚɡɚ ifelse (cond) ɨɡɧɚɱɚɟɬ: ȿɋɅɂ - ɂɇȺɑȿ. Ⱦɪɭɝɢɦɢ ɫɥɨɜɚɦɢ: ɟɫɥɢ ɭɤɚɡɚɧɧɨɟ ɜ
ɫɤɨɛɤɚɯ ɭɫɥɨɜɢɟ ɢɫɬɢɧɧɨ, ɬɨ ɜɵɩɨɥɧɹɟɬɫɹ ɨɩɟɪɚɬɨɪ 1, ɢɧɚɱɟ ɨɩɟɪɚɬɨɪ 2. ȿɫɥɢ
ɝɨɜɨɪɢɬɶ ɬɨɱɧɟɟ, ɬɨ ɧɭɠɧɨ ɫɤɚɡɚɬɶ: ɜ ɨɞɧɨɦ ɫɥɭɱɚɟ ɜɵɩɨɥɧɹɟɬɫɹ ɝɪ
ɭɩɩɚ ɨɩ
ɪɚɬɨɪɨɜ 1, ɜ ɞɪɭɝɨɦ ɫɥɭɱɚɟ - ɝɪɭɩɩɚ ɨɩɟɪɚɬɨɪɨɜ 2. ȼɬɨɪɭɸ ɝɪɭɩɩɭ ɨɩɟɪɚɬɨɪɨɜ
ɩɨɪɨɣ ɧɚɡɵɜɚɸɬ ɚɥɶɬɟɪɧɚɬɢɜɨɣ (ɚɥɶɬɟɪɧɚɬɢɜɧɨɣ ɜɟɬɜɶɸ). Ɂɚɦɟɬɢɦ, ɱɬɨ ɭɫɥɨɜɢɟ ɜɟɬɜɥɟɧɢɹ ɦɨɠɟɬ ɩɪɢɧɢɦɚɬɶ ɬɨɥɶɤɨ ɞɜɚ ɛɭɥɟɜɵɯ ɡɧɚɱɟɧɢɹ: true (ɂɫɬɢɧɚ)
ɢ false (Ʌɨɠɶ).
ɋɯɟɦɚɬɢɱɧɨ ɢɡɨɛɪɚɡɢɦ ɞɟɣɫɬɜɢɟ ɷɬɨɝɨ ɨɩɟɪɚɬɨɪɚ.
ȿɋɅɂ (ɍɋɅɈȼɂȿ ɢɫɬɢɧɧɨ), ɌɈ ɜɵɩɨɥɧɢɬɶ {ɝɪɭɩɩɭ ɈɉȿɊȺɌɈɊɈȼ
1}, ɂɇȺɑȿ ɜɵɩɨɥɧɢɬɶ {ɝɪɭɩɩɭ ɈɉȿɊȺɌɈɊɈȼ 2}.
Ɋɚɫɫɦɨɬɪɢɦ ɫɤɪɢɩɬ, ɤɨɬɨɪɵɣ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɜɜɟɞɟɧɧɨɝɨ ɩɨɥɶɡɨɜɚ-
ɬɟɥɟɦ ɡɧɚɱɟɧɢɹ ɜɵɞɚɟɬ ɨɞɧɨ ɢɡ ɞɜɭɯ ɫɨɨɛɳɟɧɢɣ.
ɤ ɩɨ ɤɨɦɚɧɞɧɨɣ ɤɧɨɩɤɟ ɩɪɢɜɟɞɟɬ ɤ ɩɨɹɜɥɟɧɢɸ ɬɚɤɨɝɨ ɞɢɚɥɨɝɨ-
ɓɟɥɱɨ
ɜɨɝɨ ɨɤɧɚ:
ɟ-
ȼ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɫɞɟɥɚɧɧɨɝɨ ɜɵɛɨɪɚ ɩɨɹɜɢɬɫɹ ɨɞɧɨ ɢɡ ɞɜɭɯ ɫɨɨɛɳɟ-
ɧɢɣ:
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