Find the composite function for the given functions.f ? g for f(x) = 
x and g(x) = - 
x
A. 1
B. x
C. 0
D. -x
Answer: D
Mathematics
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Find the root.- 
A. 7 B. Not real number C. 49 D. -7
Mathematics
Given f (x, y) = cos (e2x+ y ), find ?2f / ?x2
What will be an ideal response?
Mathematics
Find the focus and the directrix of the parabola.(x + 3)2 = -28(y - 5)
A. Focus: (-3, -2); directrix: y = 12 B. Focus: (-10, -2); directrix: y = 12 C. Focus: (-3, 12); directrix: y = -2 D. Focus: (-3, -2); directrix: x = 12
Mathematics
For the function, find the average rate of change of f from 1 to x: 
f(x) = x2 - 2x
A. 1
B. x + 1
C. 
D. x - 1
Mathematics