Find the limit and determine if the function is continuous at the point being approached.
cos
A. 1; yes
B. 1; no
C. does not exist; yes
D. does not exist; no
Answer: D
Mathematics
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Evaluate the integral.
dx
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the center of mass of the hemisphere of constant density bounded 
and the 
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 1
D. 
= 0, 
= 0, 
= 
Mathematics
Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log6.15.5
A. 0.943 B. 1.061 C. 0.740 D. 0.902
Mathematics
Perform the indicated operations and express your answer in the form a + bi. 
A. 3i
B. -i
C. ±3
D. -3i
Mathematics