Question

Differentiate 10cos2x​

Answer 1

d(10cos2x)/dx=10×(-2sin2x)=-20sin2x

Answer 2

Answer:

-20*sin(2*x)

Explanation:

(10*cos(2*x))'

(10)'*cos(2*x)+10*(cos(2*x))'

0*cos(2*x)+10*(cos(2*x))'

0*cos(2*x)+10*-sin(2*x)*(2*x)'

0*cos(2*x)+10*-sin(2*x)*((2)'*x+2*(x)')

0*cos(2*x)+10*-sin(2*x)*(0*x+2*(x)')

0*cos(2*x)+10*-sin(2*x)*(0*x+2*1)

0*cos(2*x)+10*2*(-sin(2*x))

0*cos(2*x)+10*-2*sin(2*x)

-20*sin(2*x)