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Applied Mathematics 2 CBCGS 2018-2019 BE Civil Engineering Semester 2 (FE First Year) Question Paper Solution

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Applied Mathematics 2 [CBCGS]
Marks: 80 University of Mumbai
BE Civil Engineering
BE Computer Engineering
BE Mechanical Engineering
BE Biotechnology
BE Marine Engineering
BE Printing and Packaging Technology
BE Production Engineering
BE IT (Information Technology)
BE Electrical Engineering
BE Electronics and Telecommunication Engineering
BE Instrumentation Engineering
BE Electronics Engineering
BE Chemical Engineering
BE Construction Engineering
BE Biomedical Engineering
BE Automobile Engineering

Academic Year: 2018-2019
Date: December 2018
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Question no 1 compulsory 

Attempt  ant tree Questions from remaining five questions.


[20]1
[3]1.a

Evaluate `int_0^inftye^(x^3)/sqrtx dx`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[3]1.b

Find the length of the curve `x=y^3/3+1/(4y)` from `y=1 to y=2`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[3]1.c

Solve `(D^2+2)y=e^xcosx+x^2e^(3x)`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[3]1.d

Evaluate `int_0^1 int_0^(x2) y/(ex) dy  dx` 

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[3]1.e

Solve `(4x+3y-4)dx+(3x-7y-3)dy=0`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[3]1.f

Solve `dy/dx=1+xy` with initial condition `x_0=0,y_0=0.2` By Taylors series method. Find the approximate value of y for x= 0.4(step size = 0.4).

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[20]2
[6]2.a

Solve `(d^2y)/dx^2-16y=x^2 e^(3x)+e^(2x)-cos3x+2^x`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
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[6]2.b

Show that `int_0^pi log(1+acos x)/cos x dx=pi sin^-1 a  0 ≤ a ≤1.` 

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[8]2.c

Change the order of integration and evaluate `int_0^2 int_(2-sqrt(4-y^2))^(2+sqrt(4-y^2)) dxdy` 

 

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[20]3
[6]3.a

Evaluate `int int int (x+y+z)` `dxdydz ` over the tetrahedron bounded by the planes x = 0, y = 0, z = 0 and x + y + z = 1.

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[6]3.b

Find the mass of lamina bounded by the curves ๐’š = ๐’™๐Ÿ − ๐Ÿ‘๐’™ and ๐’š = ๐Ÿ๐’™ if the density of the lamina at any point is given by `24/25 xy` 

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[6]3.c

Solve `x^2 (d^2y)/dx^2+3x dy/dx+3y =(log x.cos (log x))/x`

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
[20]4
[8]4.a

Find by double integration the area bounded by the parabola ๐’š๐Ÿ=๐Ÿ’๐’™ And ๐’š=๐Ÿ๐’™−๐Ÿ’ 

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[6]4.b

Solve `dy/dx+x sin 2 y=x^3 cos^2 y` 

 

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
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[6]4.c

Solve `dy/dx=x^3+y`with initial conditions y(0)=2 at x= 0.2 in step of h = 0.1 by Runge Kutta method of Fourth order. 

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
[20]5
[6]5.a

Evaluate `int_0^1 x^5 sin ^-1 x dx`and find the value of β `(9/2,1/2)` 

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
[6]5.b

In a circuit containing inductance L, resistance R, and voltage E, the current i is given by `L (di)/dt+Ri=E`.Find the current i at time t at t = 0 and i = 0 and L, R and E are constants.

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[8]5.c

Evaluate `int_0^6 dx/(1+3x)`by using 1} Trapezoidal 2} Simpsons (1/3) rd. and 3} Simpsons (3/8) Th rule. 

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
[20]6
[6]6.a

Find the volume bounded by the paraboloid ๐’™๐Ÿ+๐’š๐Ÿ=๐’‚๐’› and the cylinder ๐’™๐Ÿ+๐’š๐Ÿ=๐’‚๐Ÿ. 

 

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[6]6.b

Change to polar coordinates and evaluate `int_0^1 int_0^x (x+y)dydx` 

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[8]6.c

Solve by method of variation of parameters 

`(d^2y)/dx^2+3 dy/dx+2y=e^(e"^x)` 

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order

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