展开 (-2sin(x)+1)(sin(x)+1)

解答

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(- 2 sin (x) + 1) (sin (x) + 1)

cos (2 x) - sin (x)

求解步骤

(- 2 sin (x) + 1) (sin (x) + 1)

Apply FOIL method

(- 2 sin (x) + 1) (sin (x) + 1) : cos (2 x) - sin (x)

= cos (2 x) - sin (x)

e x p an d 34 (- 2 - 36)

\frac{\partial}{\partial x} ((z) ((4 x + 3 y)^{2}))

e x p an d 11 (2 - 7)

e x p an d A B (B^{^{'}} + C) + A C

e x p an d \frac{\frac{60}{M + 10}}{\frac{6}{M + 10}}