Use the formula f'(x) = 
to find the derivative of the function.f(x) = 
A. - 
B. 
C. - 
D. - 
Answer: A
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Find the average value of the function over the region.f(?, ?, ?) = ? cos ? over the solid lower ball ? ? 12, ?/2 ? ? ? ?
A. - 5184?
B. - 
C. 
D. 
Three hundred students attended the dedication ceremony of a new building on a college campus. The president of the traditionally female college announced a new expansion program, which included plans to make the college coeducational. The number of students who learned of the new program t hours later is given by the function 
.
? If 600 students on campus had heard about the new program 2 hours after the ceremony, how many students had heard about the policy after 4 hours? ? A. 1,100 B. 1,085 C. 1,095 D. 1,090 E. 1,080
Find all values that make the expression undefined.
A. 0 B. -9 C. Never undefined D. 9
Solve the problem.Ohm's law relates the current in a circuit, I, in amperes, the voltage of the circuit, V, in volts, and the impedance of the circuit, Z, in ohms, by the formula 
Find the impedance, Z, when the voltage is 
and current is I = -3i amperes.
A. 
ohms
B. 
ohms
C. 
ohms
D. 
ohms