MATH 3321 EMATH EXAM 1 | QUESTIONS AND ANSWERS | 2026 UPDATE
100% CORRECT – UH.
wait=-5766262, due=1695531540, due2=0 Question number 1.
Your answer was D. Correct.
Give the differential equation that has y4 = Cx3 − 3x as its general solution.
′ 3y4 + 4x
A y =
4xy3
3y4 + 3x
B y′ =
4xy3
3y4 + 6x
C y′ =
4xy4
3y4 + 6x
D y′ =
4xy3
3y4 − 12x
E y′ =
4xy3
F None of the above.
Question number 2.
Your answer was A. Wrong.
Find the general solution of x3 y′ = 4x4 cos(3x) + x2 y.
https://www.stuvia.com/user/mboffinhttps://www.stuvia.com/user/mboffin 1/8
, 4
A y = − x sin(3x) + Cx
3
https://www.stuvia.com/user/mboffinhttps://www.stuvia.com/user/mboffin 2/8
100% CORRECT – UH.
wait=-5766262, due=1695531540, due2=0 Question number 1.
Your answer was D. Correct.
Give the differential equation that has y4 = Cx3 − 3x as its general solution.
′ 3y4 + 4x
A y =
4xy3
3y4 + 3x
B y′ =
4xy3
3y4 + 6x
C y′ =
4xy4
3y4 + 6x
D y′ =
4xy3
3y4 − 12x
E y′ =
4xy3
F None of the above.
Question number 2.
Your answer was A. Wrong.
Find the general solution of x3 y′ = 4x4 cos(3x) + x2 y.
https://www.stuvia.com/user/mboffinhttps://www.stuvia.com/user/mboffin 1/8
, 4
A y = − x sin(3x) + Cx
3
https://www.stuvia.com/user/mboffinhttps://www.stuvia.com/user/mboffin 2/8