Quick Derivative

[Mikieman]

How do I find the derivative of -2cos(x)sin(x)

 

[soroban]

Use the Product Rule . . .

 

[Mikieman]

would my answer be -sin(x)^2 + cos(x)^2 ?

 

[Unco]

Close, but you're dropping the 2 each time.

Showing your work would help.

 

[Daniel_Feldman]

Also, you can do this:

-2sin(x)cos(x)=-sin(2x)


And use Chain Rule....