Sketch the vector as a position vector and find its magnitude.v = -i - j
A. 
= 1
B. 
= 0
C. 
= 
D. 
= 2
Answer: C
Mathematics
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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 + 8| ? 0.1, |y - 6| ? 0.1
A. |E| ? 0.04 B. |E| ? 0.02 C. |E| ? 0.01 D. |E| ? 0
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Use the half-angle formulas to evaluate the given function.cos 112.5°
A. 0.9239 B. -0.7071 C. 0.5556 D. -0.3827
Mathematics
Solve the problem.If the derivative of an even function f(x) is zero at x = c, can anything be said about the value of 
Give reasons for your answer.
What will be an ideal response?
Mathematics
Find the standard-form equation of the hyperbola whose graph is shown.
A. 
- 
= 1
B. 4x2 - 6y2 = 1
C. 
- 
= 1
D. 16x2 - 36y2 = 1
Mathematics