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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: June 2018
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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^oo5^(-4x^2)dx`

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
[3]1.b

Solve `dy/dx=x.y` with help of Euler’s method ,given that y(0)=1 and find y when x=0.3
(Take h=0.1)

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

Evaluate `(d^4y)/(dx^4)+2(d^2y)/(dx^2)+y=0`

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

Evaluate `int_0^1sqrt(sqrtx-x)dx`

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[4]1.e

Solve : `(1+log x.y)dx +(1+x/y)`dy=0

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

Evaluate I = `int_0^1 int_0^(sqrt(1+x^2)) (dx.dy)/(1+x^2+y^2)`

Concept: undefined - undefined
Chapter: [9] Double Integration
[20]2
[6]2.a

Solve  `xy(1+xy^2)(dy)/(dx)=1`

Concept: undefined - undefined
Chapter: [5] Differential Equations of First Order and First Degree
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[6]2.b

Find the area inside the circle r=a sin๐œฝ and outside the cardioide r=a(1+cos๐œฝ )

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[8]2.c

Apply Rungee-Kutta Method of fourth order to find an approximate value of y when x=0.2 given that `(dy)/(dx)=x+y` when y=1 at x=0 with step size h=0.2.

Concept: undefined - undefined
Chapter: [7] Numerical Solution of Ordinary Differential Equations of First Order and First Degree, Beta and Gamma Function
[20]3
[6]3.a

Show that the length of curve `9ay^2=x(x-3a)^2  "is"  4sqrt3a`

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[6]3.b

Change the order of integration of `int_0^1int_(-sqrt(2y-y^2))^(1+sqrt(1-y^2)) f(x,y)dxdy`

Concept: undefined - undefined
Chapter: [9] Double Integration
[8]3.c

Find the volume of the paraboloid `x^2+y^2=4z` cut off by the plane ๐’›=๐Ÿ’

Concept: undefined - undefined
Chapter: [10] Triple Integration and Applications of Multiple Integrals
[20]4
[6]4.a

Show that `int_0^1(x^a-1)/logx dx=log(a+1)`

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

If ๐’š satisfies the equation `(dy)/(dx)=x^2y-1` with `x_0=0, y_0=1` using Taylor’s Series Method find ๐’š ๐’‚๐’• ๐’™= ๐ŸŽ.๐Ÿ (take h=0.1).

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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[8]4.c

Find the value of the integral `int_0^1 x^2/(1+x^3`๐’…๐’™ using Simpson’s (๐Ÿ‘/๐Ÿ–)๐’•๐’‰ rule.

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

Find the value of the integral `int_0^1 x^2/(1+x^3`๐’…๐’™ using Trapezoidal rule

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

Find the value of the integral `int_0^1 x^2/(1+x^3`๐’…๐’™ using Simpson’s (1/3)๐’•๐’‰ rule.

Concept: undefined - undefined
Chapter: [8] Differentiation Under Integral Sign, Numerical Integration and Rectification
[20]5
[6]5.a

Solve `(y-xy^2)dx-(x+x^2y)dy=0`

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

Evaluate `int int int sqrt(1-x^2/a^2-y^2/b^2-x^2/c^2 )`dx dy dz over the ellipsoid `x^2/a^2+y^2/b^2+z^2/c^2=1.`

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

Evaluate `(2x+1)^2(d^2y)/(dx^2)-2(2x+1)(dy)/(dx)-12y=6x`

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

A resistance of 100 ohms and inductance of 0.5 henries are connected in series With a battery of 20 volts. Find the current at any instant if the relation between L,R,E is L `(di)/(dt)+Ri=E.`

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

Solve by variation of parameter method `(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
[8]6.c

Evaluate `int int xy(x-1)dx  dy` over the region bounded by ๐’™๐’š = ๐Ÿ’,๐’š= ๐ŸŽ,๐’™ =๐Ÿ and ๐’™ = ๐Ÿ’

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

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