Find the derivative of the function.r = 

A. r ' = 
B. r ' = 
C. r ' = - 
D. r ' = 


Answer: B

Mathematics

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Find the average value of the function f over the region R.f(x, y) = 6x + 10yR: 0 ? x ? 3, 0 ? y ? 8

A. 9 B. 14 C. 13 D. 49

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Write the imaginary numbers using the letter i.

A. ±2 
B. -2i 
C. 2i 
D. -i

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A. 8 and 9 B. 7 and 8 C. 9 and 10 D. 6 and 7

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Find the value of the expression using the given values.?x = -8, y = 7

A. 1 B. 15 C. -15 D. -1

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