Evaluate the function.f(x) = 2x2 - 2x - 4; Find f(r + h).
A. 2r2 + 2h2 + 2r + 2h - 4
B. 2r2 + 4rh + 2h2 - 2r - 2h - 4
C. 2r2 + 2h2 - 2r - 2h - 4
D. 2r2 + 2rh + 2h2 - 2r - 2h - 4
Answer: B
Mathematics
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Use the method of undetermined coefficients to solve the differential equation.3
- 13
+ 4y = xe-2x; 
= - 
and y = 
when x = 0
A. y = 
e4x - 
ex/3 - 
xe-2x + 
e-2x
B. y = 
e4x + 
ex/3 + 
xe-2x + 
e-2x
C. y = 
e4x - 
ex/3 + 
xe-2x + 
e-2x
D. y = 
e4x - 
ex/3 + 
xe-2x + 
e-2x
Mathematics
Find the square root if it is a real number. If it is not a real number, state so.
A. 5
B. 25
C. not a real number
D. 
- 
Mathematics
Use the Binomial Theorem to expand the expression 
.
A. 
B. 
C. 
D. 
E. 
Mathematics
Which equation does not represent y as a function of x? ?
A. ?2x = 8y B. -4y = -8 C. ?5x2 + 5y = 3 D. ?3x + 6y = -5 E. ?7y2 + 8x= 9
Mathematics