Perform the indicated operations and simplify.
- 
+ 4
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the velocity vector in terms of ur and u?.r = 2 cos 2t and ? = 4t
A. v = (-8 sin 4t)ur + 4cos 4tu? B. v = (4 sin 2t)ur + 8cos 2tu? C. v = (-4 sin 2t)ur + 8cos 2tu? D. v = (-2 sin 2t)ur + 8cos 2tu?
Mathematics
Find the integral.
A. 
tan 6x + C
B. - 
cot 6x + C
C. 
ln 
+ C
D. 
ln 
+ C
Mathematics
Evaluate.
÷ 
? 
A. - 28
B. - 
C. 1
D. - 
Mathematics
Use graphing calculator to find the inverse of the matrix. Give 5 decimal places.A = 
A. 
B. 
C. 
D. 
Mathematics