Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(7x5 + 8x2) + (6x5 - 4x2)
A. 17x14
B. 17x7
C. 13x5 + 4x2
D. 13x10 + 4x4
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 - 1| ? 0.1, |y - 1| ? 0.1, |z - 1| ? 0.1
A. |E| ? 0.36 B. |E| ? 0.28 C. |E| ? 0.336 D. |E| ? 0.3
Mathematics
Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cot(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find the value(s) of x in the interval [0, ?] that satisfy the equation sec x = 1.
A. 
B. -?
C. ?
D. 0
Mathematics
Write the number in standard form.2(cos 270° + i sin 270°)
A. -2i B. -i C. 2i D. -2
Mathematics