Add or subtract by first simplifying each radical and then combining any like radicals. Assume that all variables represent positive numbers.
+ 
A. -5
B. 11
C. 77
D. 11
Answer: B
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Solve the differential equation.y' + 2xy = 19x
A. y = 19 + Cex2
B. y = 
+ Cex2
C. y = 
+ 2x + Ce-x2
D. y = 
+ Ce-x2
Find the value.If F(x, y) = ex sinh y, find Fx(-2, 0) and Fy(-2, 0).
A. Fx(-2, 0) = e-2, Fy(-2, 0) = 0 B. Fx(-2, 0) = e-2, Fy(-2, 0) = e-2 C. Fx(-2, 0) = 0, Fy(-2, 0) = 0 D. Fx(-2, 0) = 0, Fy(-2, 0) = e-2
Find the indicated derivative.Find y " if y = 5x sin x.
A. y " = 10 cos x - 5x sin x B. y " = - 10 cos x + 5x sin x C. y " = 5 cos x - 10x sin x D. y " = - 5x sin x
Suppose that the functions f and g and their derivatives with respect to x have the following values at the given values of x. Find the derivative with respect to x of the given combination at the given value of x.
f(g(x)), x = 4
A. -40 B. 8 C. -10 D. 24