Find the product of the complex numbers. Leave answer in polar form.z1 = 2 + 2iz2 =  - i

A. 4
B. 4
C. 4
D. 4


Answer: B

Mathematics

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Provide an appropriate response.The standard normal probability density function is defined by f(x) = e- x2/2.  (a) Show that dx = .(b) Use the result in part (a) to show that the standard normal probability density function has mean 0.

What will be an ideal response?

Mathematics

If you have the following function, f ( x ) = -x 2 - 5x + 4, compute f (3), f (-2), f (5), f (-4). 

A. f (3) = 0, f (-2) = 21, f (5) = 6, f (-4) = 43 B. f (3) = –2, f (-2) = 18, f (5) = 4, f (-4) = 40 C. f (3) = 1, f (-2) = 20, f (5) = 7, f (-4) = 42 D. f (3) = –1, f (-2) = 19, f (5) = 5, f (-4) = 41 E. f (3) = –3, f (-2) = 16, f (5) = 2, f (-4) = 39

Mathematics

Find the volume of the sphere. Suppose, that r=6.1 cm. Use ?=3.14. Round your answer to the nearest tenth place.

Mathematics

Determine whether the relation is or is not a function.DomainRange 

A. Function B. Not a function

Mathematics