Find a value of k that will make f a probability density function on the indicated interval.f(x) = kx2; [0, 3]
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (x + 9)x
A. x ln(x + 9)
B. ln(x + 9) + 
C. x + (9)x-1
D. (x + 9)x
Mathematics
Evaluate the double integral.
A. 42 B. - 378 C. - 126 D. - 294
Mathematics
Find the area.
A. 160 m2 B. 21 m2 C. 42 m2 D. 80 m2
Mathematics
Find the limit, if it exists 
What will be an ideal response?
Mathematics