Задача 2
Решить уравнения вMS Excel и Mathcad. Варианты задачи выбрать из
таблицы 2.
Таблица 2 – Уравнения и заданные интервалы поиска корней
Предпоследняя цифра шифра
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1,4,7 |
2,5,8 |
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3,6,9,0 |
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0 |
cos(2x+3) – x2+0,8=0 |
cos(2,5x+3) – x2+0,5=0 |
2sin(x-1) – x3+1,5=0 |
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xÎ[–1; 1,5] |
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xÎ[–1; 1,5] |
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xÎ[–1; 1,5] |
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1 |
2cos(3x-1) – x2+1=0 |
3cos(3x - 2) – x2+1=0 |
cos(4x - 2) – 1,5x2+1=0 |
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xÎ[–1,5; 1,5] |
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xÎ[–1,5; 1,5] |
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xÎ[–1; 1] |
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2 |
7cos(4x+3) – 3x2+1=0 |
3sin(4x - 1) – 3x2+1=0 |
2cos(5x+1) – 3x2+1,5=0 |
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xÎ[–1; 1,5] |
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xÎ[–1; 1] |
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xÎ[–1; 1] |
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3 |
2cos(3x+2) – 2x2+1,5=0 |
2cos(3x+2)–2x2+1,5x=0 |
2sin(3x+2) – x2+x=0 |
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шифра |
xÎ[–1; 1,5] |
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xÎ[–1; 1,2] |
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xÎ[–1; 2] |
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4 |
3sin(3x+1) – x |
2 |
+2x=0 |
2 |
+4x=0 |
3 |
+x=0 |
цифра |
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3sin(4x+1) – 2x |
2cos(3x+2) – x |
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xÎ[–1; 2] |
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xÎ[–1; 1,5] |
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xÎ[–1; 2] |
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Последняя |
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4cos(3x+1)+x3+ex=0 |
4sin(3x+2)+x3+ex=0 |
sin(3x+2)+x3+0,05ex=0 |
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6 sin(4x+1)+0,3x2+0,1ex=0 |
sin(3x+4)+0,6x2+0,1ex=0 |
2sin(3x+1)+x2–e0,5x=0 |
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5 |
xÎ[–1; 1,5] |
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xÎ[–1; 1,5] |
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xÎ[–1; 1,5] |
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xÎ[–1; 1] |
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xÎ[–1,5; 1] |
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xÎ[–1,5; 1] |
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7 |
2cos(3x+1)+x2–e0,2x=0 |
2cos(3x+1)+x3–ex=0 |
3cos(4x+1)+x3–e0,5x=0 |
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xÎ[–1; 1,5] |
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xÎ[–1; 2] |
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xÎ[–1; 1,5] |
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8 |
3cos(4x+1)–x3–e0,5x=0 |
2sin(4x+1)–x3–e0,5x=0 |
2sin(3x+1)+x3–e0,8x=0 |
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xÎ[–1,5; 1] |
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xÎ[–1,5; 1] |
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xÎ[–1; 2] |
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9 |
4sin(3x+1)+x3–ex=0 |
2sin(2x+1)+x3–ex=0 |
sin(3x+1)–x3-0,5 ex =0 |
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xÎ[–1; 2] |
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xÎ[–1; 2,5] |
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xÎ[–1,5; 1] |
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20