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Differential Equation Test

Authored by c bhargavi

Mathematics

University

Used 6+ times

Differential Equation Test
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Degree of [1+(dydx)2]3=(d2ydx2)2\left[1+\left(\frac{\text{d}y}{\text{d}x}\right)^2\right]^3=\left(\frac{\text{d}^2y}{\text{d}x^2}\right)^2 is ______

6

2

3

4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The order of xd2ydx2−(2x−1)dydx+(x−1)y=exx\frac{\text{d}^2y}{\text{d}x^2}-\left(2x-1\right)\frac{\text{d}y}{\text{d}x}+\left(x-1\right)y=e^x is ______

2

1

0

Not defined

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The complimentary solution of (D3−D2−4D+4)y=0\left(D^3-D^2-4D+4\right)y=0

y=c1+c2e2x+c3e−2xy=c_1+c_2e^{2x}+c_3e^{-2x}

y=c1ex+c2e2x+c3e−4xy=c_1e^x+c_2e^{2x}+c_3e^{-4x}

y=c1e3x+c2e4x+c3e−2xy=c_1e^{3x}+c_2e^{4x}+c_3e^{-2x}

y=c1ex+c2e2x+c3e−2xy=c_1e^x+c_2e^{2x}+c_3e^{-2x}

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Find the general solution of dydx=e(x+y)\frac{\text{d}y}{\text{d}x}=e^{\left(x+y\right)}

ey=ex+ce^y=e^x+c

e−y=ex+ce^{-y}=e^x+c

−e−y=ex+c-e^{-y}=e^x+c

−e−y=e−x+c-e^{-y}=e^{-x}+c

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Find the Integrating Factor of dudx−ux=1x2\frac{\text{d}u}{\text{d}x}-\frac{u}{x}=\frac{1}{x^2}

xx

1x\frac{1}{x}

exe^x

e−xe^{-x}

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Find the particular Integral of (D2+D+1)y=sin⁡x\left(D^2+D+1\right)y=\sin x

sinx

cos⁡ x\cos\ x

−cos⁡ x-\cos\ x

-x cosx

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The solution of clairaut's equation y=xp+2py=xp+\frac{2}{p} where p=dydxp=\frac{\text{d}y}{\text{d}x} is______

y=x+2cy=x+\frac{2}{c}

y=xc+2cy=xc+\frac{2}{c}

y=xc+2cy=xc+2c

None

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