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# BCSL-058 Computer oriented Numerical techniques Lab Solved Assignment 2019-20

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Course Code : BCSL-058 Computer oriented Numerical techniques Lab BCA(5)/L-058/Assignment/2019-20 15th October 2019 (for July 2019 session) 15th April 2020 (for January 2020 session)

Q1. Write a program in C/C++ to find the solution of system of linear equations (given below), by suing Gauss- Elimination method:
𝑥+𝑦+𝑧=2
𝑥−2𝑦+3𝑧=14
𝑥+3𝑦−6𝑧=−23

Q2. Write a program in C/C++ to determine the approximate value of the definite integral (I), by using Simpson’s (1/3)rd rule:
I=∫𝑥1/3 𝑑𝑥,1.00.2
Using step size (ℎ) = 0.2

Q3.Write a program in C/C++ to find the value of Sin(𝜋/6) by using Lagrange’s Interpolation, the related data is given below
x : 0 𝜋 /4 𝜋 /2
y= Sin(x) : 0 0.70711 1.0

Q4. Write a program in C/C++ to calculate the value of “cos 𝑥” by using the series expansion given below:
cos𝑥=1−𝑥22!+𝑥44!−𝑥66!+⋯Note: Evaluate cos 𝑥 only upto first three terms.
Also find the value of cos 𝑥 by using the inbuilt function.
Compare the results i.e., the result produced by your program and that produced by inbuilt function. Based on comparison, determine error.

Q5. Write a program in C/C++ to find the root of the following equation by using “Bisection Method” :
Equation:
𝑥3−5𝑥+1=0;𝑥∈[1,2]

Q6. Write a program in C/C++ to approximate the value of Integral (I), by using Trapezoidal rule : I=∫𝑑𝑥√5+𝑥10.2
Using step size (ℎ)=0.2

Q7. Write a program in C or C++ to demonstrate the operation of the following operations, for the function 𝑓(𝑥)=𝑥2+𝑥+7∶
(a) Forward Difference Operator
(b) Central Difference Operator

Q8. Write a program in C or C++ to calculate the value of 𝑒𝑥 by suing its series expansion, given below :
𝑒𝑥=1+𝑥+𝑥22!+𝑥33!+⋯
Note: Evaluate 𝑒𝑥only upto first three terms.
Also find the value of 𝑒𝑥 by using the inbuilt function and compare it with the result produced by your program.

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