Name the quadrant in which the angle ? lies.csc ? > 0, sec ? > 0
A. I
B. II
C. III
D. IV
Answer: A
Mathematics
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Solve the given differential equation. (The form of yp is given.)D2y + 49y = sin x - 1 (Let yp = A + B sin x + C cos x.)
A. y = c1 sin 7x + c2 cos 7x + 
+ 
sin x
B. y = c1 sin 7x + c2 cos 7x - 
+ 
sin x
C. y = c1 sin 7x + c2 cos 7x - 
- 
sin x
D. y = c1 sin 7x + c2 cos 7x - 
+ 
sin x + 
cos x
Mathematics
Evaluate the integral.
A. sin-1 
- 2
+ C
B. 
tan-1 
+ 
+ C
C. 5 tan-1 
- 
+ C
D. 5 sin-1 
- 
+ C
Mathematics
Find cos(A + B).cos A = 
and 
, where 
and 
.
A. - 
B. 
C. - 
D. 
Mathematics
Factor the polynomial as the difference of two squares or state that it is irreducible.36x4 - 49
A. (6x2 + 7)2 B. (6x2 + 7)(6x2 - 7) C. (6x2 - 7)2 D. (36x2 + 1)(x2 - 49)
Mathematics