Find the derivative of y.y = cosh x5
A. -sinh x5
B. 5x4 sinh x5
C. sinh x5
D. -5x4 sinh x5
Answer: B
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Provide an appropriate response.Consider the quartic function f(x) = ax4 + bx3 + cx2 + dx + e, a ? 0. Must this function have at least one critical point? Give reasons for your answer. (Hint: Must 
for some x?) How many local extreme values can f have?
What will be an ideal response?
Express the vector in the form ai + bj + ck.9u - 5v if u = 
and v = 
A. v = 9i + 9j - 5k B. v = -6i + 9j - 5k C. v = 24i + 9j - 5k D. v = -6i + 14j - 5k
Solve the problem.Barnes and Able sell life, health, and auto insurance. Sales for May and June are given in the matrices.LifeHealth AutoM = 
J = 
Find the matrix that would give total sales for May and June.
A. 
B. 
C. 
D. 
Round to the indicated place value.Round 91.2539 to the nearest thousandth.
A. 91.255 B. 91.25 C. 91.253 D. 91.254