Find y”.y = 6 sin(2x + 9)

Solve the problem.Find the points where the graph of the function have horizontal tangents.f(x) = x3 – 15x

Chronic adrenal insufficiency is a rare condition. Symptoms include weakness, weight loss, and hypotension. This disease is called:    

Find the derivative.r = 8 – θ6 cos θ

Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = (2x + 10)5

Find dy/dt.y = cos5(πt – 10)

Find dy/dt.y = cos4(πt – 18)

Find an equation for the tangent to the curve at the given point.f(x) = 4 – x + 1, (16, 1)

Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = tan u, u = -6x + 2

Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 5, u ‘(1) = -7, v(1) = 7, v ‘(1) = -4. (3v – u) at x = 1