Establish the identity.
+ 
= 2 sec t
What will be an ideal response?
+ 
= 
+ 
= 
= 
= 2 sec t.
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Solve the initial value problem.y'(t) + 4y = 3, y(0) = 1
A. y = 
e-4t + 
B. y = 
e-4t + 
C. y = 
e4t + 
D. y = 
e4t + 
Solve the problem.In the study of alternating electric current, capacitive voltage is given byVc = - 
cos 2?ft,where f is the number of cycles per second, i is the maximum current, and t is the time in seconds. Solve the equation for t.
A. t = 2?f cos 
B. t = 
arccos 
C. t = 
arccos 
D. t = 2?f arccos 
Insert a decimal point in the product.0.0013 × 0.0054 = 702
A. 702. B. 0.0000702 C. 0.000001 D. 0.00000702
For each equation, find the missing value in the ordered pairs.3x + y = -20( , 7), ( , 40),( , -20)
A. (-9, -9), (-20, 40), (0, -20) B. (-9, 7), (-20, 40),(0, -20) C. (-9, 7), (-20, -40), (0, 40) D. (-9, 7), (-20, -20), (0, -20)