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Applied Mathematics 2 CBCGS 2017-2018 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: 2017-2018
Date: December 2017
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(1) Question no. 1 is compulsory.
(2) Attempt any 3 questions from remaining five questions.


[20]1
[3]1.a

Evaluate `int_0^oo e^(-x^2)/sqrtxdx`

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
[3]1.b

Solve `(D^3+1)^2y=0`

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

Solve the ODE `(y+1/3y^3+1/2x^2)dx+(x+xy^2)dy=0`

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
[4]1.d

Use Taylor’s series method to find a solution of `(dy)/(dx) =1+y^2, y(0)=0` At x = 0.1 taking h=0.1 correct upto 3 decimal places.

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
[4]1.e

Given `int_0^x 1/(x^2+a^2) dx=1/atan^(-1)(x/a)`using DUIS find the value of `int_0^x 1/(x^2+a^2) `

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[4]1.f

Find the perimeter of the curve r=a(1-cos 𝜽)

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[20]2
[6]2.a

Solve `(D^3+D^2+D+1)y=sin^2x`

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

Change the order of integration `int_0^aint_sqrt(a^2-x^2)^(x+3a)f(x,y)dxdy`

Concept: undefined - undefined
Chapter: [9] Double Integration
[8]2.c

Evaluate `int int(2xy^5)/sqrt(x^2y^2-y^4+1)dxdy`, where R is triangle whose vertices are (0,0),(1,1),(0,1).

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

Find the volume enclosed by the cylinder `y^2=x` and `y=x^2` Cut off by the planes z = 0, x+y+z=2.

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

Using Modified Eulers method ,find an approximate value of y At x = 0.2 in two step taking h=0.1 and using three iteration Given that `(dy)/(dx)=x+3y` , y = 1 when x = 0.

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
[8]3.c

Solve `(1+x)^2(d^2y)/(dx^2)+(1+x)(dy)/(dx)+y=4cos(log(1+x))`

Concept: undefined - undefined
Chapter: [6] Linear Differential Equations with Constant Coefficients and Variable Coefficients of Higher Order
[20]4
[6]4.a

Show that `int_0^asqrt(x^3/(a^3-x^3))dx=a(sqrtxgamma(5/6))/(gamma(1/3))`

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[6]4.b

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
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[8]4.c

Use polar co ordinates to evaluate `int int (x^2+y^2)^2/(x^2y^2)` 𝒅𝒙 𝒅𝒚 over yhe area Common to circle `x^2+y^2=ax  "and" x^2+y^2=by, a>b>0`

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[20]5
[6]5.a

Solve `ydx+x(1-3x^2y^2)dy=0`

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

Find the mass of a lamina in the form of an ellipse `x^2/a^2+y^2/b^2=1`, If the density at any point varies as the product of the distance from the
The axes of the ellipse.

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[8]5.c

Compute the value of `int_0^(pi/2) sqrt(sinx+cosx) dx` usingTrapezoidal rule by dividing into six Subintervals.

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification

Compute the value of `int_0^(pi/2) sqrt(sinx+cosx) dx` using Simpson’s (1/3)rd rule by dividing into six Subintervals.

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification

Compute the value of `int_0^(pi/2) sqrt(sinx+cosx) dx` using Simpson’s (3/8)th rule by dividing into six Subintervals.

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[20]6
[6]6.a

Change the order of Integration and evaluate `int_0^2int_sqrt(2y)^2 x^2/(sqrtx^4-4y^2)dxdy`

Concept: undefined - undefined
Chapter: [9] Double Integration
[6]6.b

Evaluate `int int intx^2dxdydz` over the volume bounded by planes x=0,y=0, z=0 and `x/a+y/b+z/c=1`

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

Solve by method of variation of parameters :`(D^2-6D+9)y=e^(3x)/x^2`

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

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