Add. Write the answer in lowest terms.
+ 
A. 
B. 
C. 1
D. 
Answer: C
Mathematics
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Solve the given differential equation. (The form of yp is given.)D2y - 2Dy + y = 2x + x2 + sin 5x(Let yp = A + Bx + Cx2 + E sin 5x + F cos 5x.)
A. y = c1ex + c2xex + 10 + 6x + x2 + 
sin 5x + 
cos 5x
B. y = c1ex + 10 + 6x + x2 - 
sin 5x + 
cos 5x
C. y = c1ex + c2xex + 10 + 6x + x2 - 
sin 5x + 
cos 5x
D. y = c1ex + c2xex + 10 + 6x + x2 - 
cos 5x + 
sin 5x
Mathematics
Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 3
Mathematics
Rewrite the expression with a positive rational exponent. Simplify, if possible.(4x2y5/2)1/2
A. 2xy5/4
B. 
C. 
D. 4xy5/4
Mathematics
Graph the parabola.y = -6(x - 6)2 - 5
A. 
B. 
C. 
D. 
Mathematics