Find the limit or state that it does not exist.
A. 0
B. - 
C. 
D. Does not exist
Answer: C
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x - 1| ? 0.1, |y - 1| ? 0.1
A. |E| ? 0.0106 B. |E| ? 0.0128 C. |E| ? 0.0158 D. |E| ? 0.02
Solve the differential equation.y'' - 4y' + 29y = 0
A. y = e-2x(C1 cos 5x + C2 sin 5x) B. y = ex(C1 cos 2x + C2 sin 5x) C. y = e2x(C1 cos 5x + C2 sin 5x) D. y = C1 e2x + C2 e5x
Show that the equation is not an identity by listing the value(s) of the variable from among 0, 
, 
, and - 
for which the equation is false.sin4? + cos4? = 1
A. 
, 
, and - 
B. 
and - 
C. 
and 0
D. 
, 
, and 0
Describe the graph of the polar equation. r2sin 2? = 42
A. Parabola centered at the origin opening to the right B. Hyperbola with asymptotes y = ±21x C. Parabola centered at the origin opening upward D. Hyperbola with the x- and y-axes as asymptotes