Answer:
https://preview.redd.it/t4p9fgd30ag61.gif?format=mp4&s=56295791fda9b2006756326ff4863b84a5c30271
Step-by-step explanation:
Answer:
Step-by-step explanation:
-

We first need dy/dx.
dy/dx = -2sin(x/2)(1/2)
dy/dx = -sin(x/2)
We now find d^2y/dx^2.
d^2y/dx^2 = -cos(x/2)(1/2)
d^2y/dx^2 = -(1/2)cos(x/2)
Answer:
x = -3
x = 7
Step-by-step explanation:
If either term is zero the product is zero
(2x + 6)(x - 7) = 0
2x + 6 = 0
2x = -6
x = -3
x - 7 = 0
x = 7