For the given probability density function, over the stated interval, find the requested value.f(x) = 
x, over [1, 4]; Find the mean.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the most general antiderivative.
dt
A. 
t3/2 - 
t8/7 + C
B. 
t1/2 - 
t-6/7 + C
C. 
- 
+ C
D. 
t3/2 - 
t8/7 + C
Mathematics
L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. 1 B. -1 C. ? D. 0
Mathematics
Simplify and evaluate using a calculator.
A. 3
; 7.93725393
B. 21; 21
C. 3
; 7.93725393
D. 7
; 7.93725393
Mathematics
Use a sum or difference identity to find the exact value.sin 260° cos 20° - cos 260° sin 20°
A. 
B. - 
C. - 
D. - 
Mathematics