展开 (f(x)-g(x))x'

解答

展开

(f (x) - g (x)) x^{'}

x' f (x) - x' g (x)

求解步骤

(f (x) - g (x)) x^{'}

使用分配律:

a (b - c) = ab - a c

a = x^{'}, b = f (x), c = g (x)

= x^{^{'}} f (x) - x^{^{'}} g (x)

e x p an d \frac{3 - x}{( x + 1 ) ( x - 1 )}

e x p an d (k^{2} + k) \cdot (k + 1)!

e x p an d \frac{x ^{2} - 4}{( x - 1 ) ^{3}}

e x p an d \frac{6}{( x + 1 ) ^{2}}

e x p an d \frac{1}{( a r + 1 ) ( a r + a + 1 )}