solvefor d,d(7)=2x^3-x^2-4x+100

解答

求解

d, d (7) = 2 x^{3} - x^{2} - 4 x + 100

d = \frac{2 x ^{3} - x ^{2} - 4 x + 100}{7}

求解步骤

d (7) = 2 x^{3} - x^{2} - 4 x + 100

两边除以

7

d = \frac{2 x ^{3} - x ^{2} - 4 x + 100}{7}

2^{4} x - 3.5 x = 5^{2} - 2^{4}

2 (p + 9) = - 4

so l v e f or x, \frac{x}{2} + y = 0

so l v e f or a, m - 2 a = 1

0^{3} \cdot 0^{- 1} = \frac{0 ^{3}}{0 ^{1}}