The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).y = x

A. sin ? = - cos ?
B. r = cos ?
C. r = sin ?
D. sin ? = cos ?


Answer: D

Mathematics

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Solve the problem.Consider the functions f(x) = x2 and g(x) = x3 and their linearizations at the origin. Over some interval  the approximation error for g(x) is less than the approximation error for f(x) for all x within the interval. Derive a reasonable approximation for the value of ?. Show your work. (Hint, the absolute value of the second derivative of each function gives a measure of how quickly the slopes of the function and its linear approximation are deviating from one another.)

What will be an ideal response?

Mathematics

Simplify the expression.2

A.
B.
C. 2
D.

Mathematics

Multiply.(7 - 5i)(7 + 9i)

A. 94 - 28i B. -45i2 + 28i + 49 C. 4 - 98i D. 94 + 28i

Mathematics

Use the Factor Theorem to determine whether x - c is a factor of f(x).f(x) = x4 + 7x3 + 2x2 + 9x - 35; x + 7

A. Yes B. No

Mathematics