Assume x and y are functions of t. Evaluate dy/dt.xy + x = 12; dx/dt = -3, x = 2, y = 5
A. 3
B. -9
C. -3
D. 9
Answer: D
Mathematics
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Find f[g(x)] and g[f(x)].f(x) = 
; g(x) = 
A. f[g(x)] = 15x/8 ; g[f(x)] = 8x/15 B. f[g(x)] = 8x/15 ; g[f(x)] = 15x/8 C. f[g(x)] = 15/8x ; g[f(x)] = 8/15x D. f[g(x)] = 8/15x ; g[f(x)] = 15/8x
Mathematics
Solve. Clear fractions first.
y - 8 = 13
A. -42 B. 44 C. 42 D. -44
Mathematics
Factor, if possible.1000x3 + 1
A. (10x - 1)(100x2 + 10x + 1) B. (1000x + 1)(x2 - 10x + 1) C. (10x + 1)(100x2 - 10x + 1) D. (10x + 1)(100x2 + 1)
Mathematics
Find the second-order partial derivative.Find fxy when f(x, y) = xy2 + yex2 + 5.
A. 2y + 2xex2 B. 2yex2 C. y + xex2 D. 2xex2
Mathematics