cos(x) - 1
Differentiate cos(x)−1\cos{\left(x \right)} - 1cos(x)−1 term by term:
The derivative of cosine is negative sine:
The derivative of the constant −1-1−1 is zero.
The result is: −sin(x)- \sin{\left(x \right)}−sin(x)
The answer is:
-sin(x)
-cos(x)
sin(x)