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(2) = 8, u '(2) = 3, v(2) = -1, v '(2) = -5.
at x = 2
A. - 
B. 
C. - 
D. - 
Answer: A
Mathematics
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Solve the given differential equation.
+ 16y = 0
A. y = c1 sin 4x + c2 cos 4x B. y = (c1 + c2x)e-4x C. y = c1 sin 4x + c2x cos 4x D. y = (c1 + c2x)e4x
Mathematics
Find the least common denominator of the rational expressions.
and 
A. 20(x - 1)(x + 1) B. 4(x - 1)2(x + 1) C. 20(x - 1)2(x + 1) D. 80(x - 1)2(x + 1)
Mathematics
Solve. Write the answer in simplest form.Find 
of 77.
A. 7
B. 
C. 847
D. 11
Mathematics
Find the unknown value in the percent proportion 
Round to the nearest tenth, if necessary.part = 20, percent = 4
A. whole = 50 B. whole = 500 C. whole = 250 D. whole = 20
Mathematics