Decide whether or not the function is a probability density function on the indicated interval.f(x) = 2x; [-2, 
]
A. Yes
B. No
Answer: A
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Find the first three terms of the Taylor series in x - a.cos x, a = 
A. 
- 
3 + 
5 - . . .
B. 
- 
2 + 
3 - . . .
C. 1 - 
- 
2 + . . .
D. 1 - 
2 + 
3 - . . .
Solve.The resisistance R in ohms (?) of a particular circuit element is given by the formula 
Use the formula to find the temperature T in degrees Celsius (°C) at which the resistance of the circuit element is 6.02 ?.
A. 42°C B. 51°C C. 49°C D. 63°C
Find an equation for the sphere with the given center and radius.Center (-1, 0, 0), radius = 1
A. x2 + y2 + z2 + 2x = 1 B. x2 + y2 + z2 - 2x = 1 C. x2 + y2 + z2 - 2x = 0 D. x2 + y2 + z2 + 2x = 0
Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 20.0 L B. 15.0 L C. 24 L D. 30 L