展开 (sec(x)+csc(x))(cos(x)-sin(x))

解答

展开

(sec (x) + csc (x)) (cos (x) - sin (x))

cot (x) - tan (x)

求解步骤

(sec (x) + csc (x)) (cos (x) - sin (x))

Apply FOIL method

(sec (x) + csc (x)) (cos (x) - sin (x)) : cot (x) - tan (x)

= cot (x) - tan (x)

e x p an d (- 7 sin (x) + 7 sin (7 x))^{2}

e x p an d \frac{1}{( x - a ) ( x - b )}

e x p an d (5 x + y)^{6}

e x p an d (- 3, 2) y (6, - 4)

e x p an d x^{\frac{3}{5}} (x - 3)