Задание 4 (Функции комплексного аргумента)

>> Z = 54 - 7*i

Z =

54.0000 - 7.0000i

>> imag(Z)

ans =

-7

>> real(Z)

ans =

54

>> conj(Z)

ans =

54.0000 + 7.0000i

Задание 5 (Тригонометрические и обратные им функции)

>> a = [12 3 5 0; 58 21 4 9; 78 65 4 9; -5 32 -8 0]

a =

12 3 5 0

58 21 4 9

78 65 4 9

-5 32 -8 0

>> acos(a)

ans =

0.0000 + 3.1763i 0.0000 + 1.7627i 0.0000 + 2.2924i 1.5708 + 0.0000i

0.0000 + 4.7535i 0.0000 + 3.7371i 0.0000 + 2.0634i 0.0000 + 2.8873i

0.0000 + 5.0498i 0.0000 + 4.8675i 0.0000 + 2.0634i 0.0000 + 2.8873i

3.1416 - 2.2924i 0.0000 + 4.1586i 3.1416 - 2.7687i 1.5708 + 0.0000i

>> acot(a)

ans =

0.0831 0.3218 0.1974 1.5708

0.0172 0.0476 0.2450 0.1107

0.0128 0.0154 0.2450 0.1107

-0.1974 0.0312 -0.1244 1.5708

>> acsc(a)

ans =

0.0834 + 0.0000i 0.3398 + 0.0000i 0.2014 + 0.0000i 1.5708 - Infi

0.0172 + 0.0000i 0.0476 + 0.0000i 0.2527 + 0.0000i 0.1113 + 0.0000i

0.0128 + 0.0000i 0.0154 + 0.0000i 0.2527 + 0.0000i 0.1113 + 0.0000i

-0.2014 + 0.0000i 0.0313 + 0.0000i -0.1253 + 0.0000i 1.5708 - Infi

>> asec(a)

ans =

1.4874 + 0.0000i 1.2310 + 0.0000i 1.3694 + 0.0000i 0.0000 + Infi

1.5536 + 0.0000i 1.5232 + 0.0000i 1.3181 + 0.0000i 1.4595 + 0.0000i

1.5580 + 0.0000i 1.5554 + 0.0000i 1.3181 + 0.0000i 1.4595 + 0.0000i

1.7722 + 0.0000i 1.5395 + 0.0000i 1.6961 + 0.0000i 0.0000 + Infi

>> asin(a)

ans =

1.5708 - 3.1763i 1.5708 - 1.7627i 1.5708 - 2.2924i 0.0000 + 0.0000i

1.5708 - 4.7535i 1.5708 - 3.7371i 1.5708 - 2.0634i 1.5708 - 2.8873i

1.5708 - 5.0498i 1.5708 - 4.8675i 1.5708 - 2.0634i 1.5708 - 2.8873i

-1.5708 + 2.2924i 1.5708 - 4.1586i -1.5708 + 2.7687i 0.0000 + 0.0000i

>> atan(a)

ans =

1.4877 1.2490 1.3734 0

1.5536 1.5232 1.3258 1.4601

1.5580 1.5554 1.3258 1.4601

-1.3734 1.5396 -1.4464 0

>> cos(a)

ans =

0.8439 -0.9900 0.2837 1.0000

0.1192 -0.5477 -0.6536 -0.9111

-0.8578 -0.5625 -0.6536 -0.9111

0.2837 0.8342 -0.1455 1.0000

>> cot(a)

ans =

-1.5727 -7.0153 -0.2958 Inf

0.1200 -0.6547 0.8637 -2.2108

-1.6689 -0.6803 0.8637 -2.2108

0.2958 1.5128 0.1471 Inf

>> csc(a)

ans =

-1.8637 7.0862 -1.0428 Inf

1.0072 1.1952 -1.3213 2.4265

1.9456 1.2094 -1.3213 2.4265

1.0428 1.8135 -1.0108 Inf

>> sec(a)

ans =

1.1850 -1.0101 3.5253 1.0000

8.3907 -1.8257 -1.5299 -1.0975

-1.1658 -1.7779 -1.5299 -1.0975

3.5253 1.1987 -6.8729 1.0000

>> tan(a)

ans =

-0.6359 -0.1425 -3.3805 0

8.3309 -1.5275 1.1578 -0.4523

-0.5992 -1.4700 1.1578 -0.4523

3.3805 0.6610 6.7997 0

>> sin(a)

ans =

-0.5366 0.1411 -0.9589 0

0.9929 0.8367 -0.7568 0.4121

0.5140 0.8268 -0.7568 0.4121

0.9589 0.5514 -0.9894 0