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Description
SESSION | Nov-dec2023 |
PROGRAM | BCA |
SEMESTER | III |
course CODE & NAME | DCA2101 & Computer Oriented Numerical Methods |
SET-I
- Show that
(a)
(b)
Ans 1.
To prove the given identities, let’s start by defining the operators:
= Laplacian operator (also known as the second-order spatial derivative operator)
= Gradient operator (vector of first-order spatial derivatives)
Divergence operator (divergence of a vector field)
Scalar
- b) To prove :
Let’s start with the left-hand side (LHS):
Using the definitions of the Laplacian and gradient operators, we have:
Expanding the terms, we can
Its Half solved only
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- Solve the system of equation by Gauss Elimination’s method
.
Ans 2.
Consider the given system of equations,
2x+y+4z=124
x+11y−z=338
x−3y+2z=20
Convert the system to matrix form,
The augmented matrix for the above matrix form,
Q3. Find the equation of the best fitting straight line for the data:
X | 1 | 3 | 4 | 6 | 8 | 9 | 11 | 14 |
Y | 1 | 2 | 4 | 4 | 5 | 7 | 8 | 9 |
Ans 3.
To find the equation of the best-fitting straight line for the given data points, you can use linear regression. The equation of a straight line is typically represented as:
Y = mx + b
Where:
- Y is the dependent variable (in this case, the Y values).
- X is the independent variable (in this case, the X values).
- m is the
Set-II
Q4. Evaluate f(15), given the following table of values:
x | 10 | 20 | 30 | 40 | 50 |
y = f(x) | 46 | 66 | 81 | 93 | 101 |
Ans 4.
To evaluate f(15) using the given table of values, you can use interpolation. Since the table provides values of y = f(x) for specific values of x, you can interpolate to find the value of f(15) which falls between x = 10 and x = 20.
We can use linear interpolation for this purpose. Linear interpolation assumes that the function f(x) varies linearly between two data points. Here’s how you can calculate f(15):
First, identify the two data
Q5. Use Taylor’s series method to solve the initial value problem:
for given that .
Ans 5.
The Differential Equation
With initial condition
- Apply Runge-Kutta fourth order method to find an approximate value of y when x = 0.1 given that , .
Ans 6.
To apply the Runge-Kutta fourth-order method to solve the given initial value problem, we need to follow these steps:
- Define the differential equation:
- Specify the initial