cos(x) + sin(x)
Differentiate sin(x)+cos(x)\sin{\left(x \right)} + \cos{\left(x \right)}sin(x)+cos(x) term by term:
The derivative of cosine is negative sine:
The derivative of sine is cosine:
The result is: −sin(x)+cos(x)- \sin{\left(x \right)} + \cos{\left(x \right)}−sin(x)+cos(x)
The answer is:
-sin(x) + cos(x)
-(cos(x) + sin(x))
-cos(x) + sin(x)