#include <stdio.h> #include <math.h> double f(double x) { return pow(x,2)-4*x-10; //Given equation may will be changed } int main() { float x1,x2,x3,f1,f2,E; printf("Enter initial points X1 and X2: "); scanf("%f %f",&x2,&x3); printf("Enter the tolerance value: "); scanf("%f",&E); do { x1 = x2; x2 = x3; f1 = f(x1); f2 = f(x2); x3 = (f2*x1 - f1*x2)/(f2-f1); } while(fabs((x3-x2)/x3)>E); printf("Root is: %.2f\n",x3); return 0; } //Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (153 -154)
CODE BOX
Thursday, 16 November 2017
Secant Method
Friday, 20 October 2017
Newton-Raphson Method
#include <stdio.h>
#include <math.h>
double f(double x)
{
return pow(x,2)-3*x+2; //Given equation may will be changed
}
double ff(double x)
{
return 2*x-3; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter initial value of X: ");
scanf("%f",&x1);
printf("Enter the tolerance value: ");
scanf("%f",&E); // Tolerance may vary 0.0001
do
{
x0 = x1;
x1 = x0 - (f(x0)/ff(x0));
}while(fabs((x1-x0)/x1)>E);
printf("Root is: %.2f\n",x0);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (146 -147)
#include <math.h>
double f(double x)
{
return pow(x,2)-3*x+2; //Given equation may will be changed
}
double ff(double x)
{
return 2*x-3; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter initial value of X: ");
scanf("%f",&x1);
printf("Enter the tolerance value: ");
scanf("%f",&E); // Tolerance may vary 0.0001
do
{
x0 = x1;
x1 = x0 - (f(x0)/ff(x0));
}while(fabs((x1-x0)/x1)>E);
printf("Root is: %.2f\n",x0);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (146 -147)
Thursday, 12 October 2017
False Position Method
#include <stdio.h>
#include <math.h>
double f(double x)
{
return pow(x,2)+x-2; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter interval: ");
scanf("%f %f",&x1,&x2);
printf("Enter the tolerance value: ");
scanf("%f",&E);
if(f(x1)*f(x2)>=0)
{
printf("Incorrect Interval\n");
return 0;
}
x0 = x1 - (f(x1)*((x2-x1)/(f(x2)-f(x1))));
if(f(x0)==0)
{
printf("Root is: %.2lf\n",x0);
return 0;
}
do
{
x0 = x1 - (f(x1)*((x2-x1)/(f(x2)-f(x1))));
if(f(x1)*f(x0)<0)
{
x2 = x0;
}
else
{
x1 = x0;
}
}while(fabs((x2-x1)/x2)>E);
printf("Root is: %.2f\n",(x1+x2)/2);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (138 -144)
#include <math.h>
double f(double x)
{
return pow(x,2)+x-2; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter interval: ");
scanf("%f %f",&x1,&x2);
printf("Enter the tolerance value: ");
scanf("%f",&E);
if(f(x1)*f(x2)>=0)
{
printf("Incorrect Interval\n");
return 0;
}
x0 = x1 - (f(x1)*((x2-x1)/(f(x2)-f(x1))));
if(f(x0)==0)
{
printf("Root is: %.2lf\n",x0);
return 0;
}
do
{
x0 = x1 - (f(x1)*((x2-x1)/(f(x2)-f(x1))));
if(f(x1)*f(x0)<0)
{
x2 = x0;
}
else
{
x1 = x0;
}
}while(fabs((x2-x1)/x2)>E);
printf("Root is: %.2f\n",(x1+x2)/2);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (138 -144)
Tuesday, 28 February 2017
Bisection Method
#include <stdio.h>
#include <math.h>
double f(double x)
{
return pow(x,2)-4*x-10; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter interval: ");
scanf("%f %f",&x1,&x2);
printf("Enter the tolerance value: ");
scanf("%f",&E);
if(f(x1)*f(x2)>=0)
{
printf("Incorrect Interval\n");
return 0;
}
x0 = (x1+x2)/2;
if(f(x0)==0)
{
printf("Root is: %.2lf\n",x0);
return 0;
}
do
{
x0 = (x1+x2)/2;
if(f(x1)*f(x0)<0)
{
x2 = x0;
}
else
{
x1 = x0;
}
}while(fabs((x2-x1)/x2)>E);
printf("Root is: %.2f\n",(x1+x2)/2);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (131 -138)
#include <math.h>
double f(double x)
{
return pow(x,2)-4*x-10; //Given equation may will be changed
}
int main()
{
float x1,x2,x0,E;
printf("Enter interval: ");
scanf("%f %f",&x1,&x2);
printf("Enter the tolerance value: ");
scanf("%f",&E);
if(f(x1)*f(x2)>=0)
{
printf("Incorrect Interval\n");
return 0;
}
x0 = (x1+x2)/2;
if(f(x0)==0)
{
printf("Root is: %.2lf\n",x0);
return 0;
}
do
{
x0 = (x1+x2)/2;
if(f(x1)*f(x0)<0)
{
x2 = x0;
}
else
{
x1 = x0;
}
}while(fabs((x2-x1)/x2)>E);
printf("Root is: %.2f\n",(x1+x2)/2);
return 0;
}
//Reference : Nemerical Methods by E Balagurusamy (2016-2017) pages (131 -138)
Sunday, 28 August 2016
Final Keyword
final variable :-
When a variable declared as final it's value never be changed next time .
final method :-
When a method declared as final it can be overridden .
final class :-
To prevent a class from being inherited the class need to declared as final.
finally block :-
A finally block is a block of code that will be executed after a try/catch block has completed and before the code following the try/catch block . The finally block will execute whether or not an exception is thrown . If an exception is thrown. the finally block will execute even if no catch statement matches the exception .
finalize method :-
When an object is no longer used, it is called "garbage" . The function of the "garbage collector" is to determine objects which are no longer used and reclaim the memory occupied by the object .
When a variable declared as final it's value never be changed next time .
final method :-
When a method declared as final it can be overridden .
final class :-
To prevent a class from being inherited the class need to declared as final.
finally block :-
A finally block is a block of code that will be executed after a try/catch block has completed and before the code following the try/catch block . The finally block will execute whether or not an exception is thrown . If an exception is thrown. the finally block will execute even if no catch statement matches the exception .
finalize method :-
When an object is no longer used, it is called "garbage" . The function of the "garbage collector" is to determine objects which are no longer used and reclaim the memory occupied by the object .
Why Abstract Class ?
Sometimes there may be a need to crate a super class that only defines a generalized form that will be shared by all of its sub classes , leaving it to each sub class to fill in the details . Such a class determines the mature of the methods that the sub classes must implement. Abstract class provides a way to solve this type of situation.
Restrictions of abstract class :-
* Constructor never be declared as abstract .
* An object can't be created of abstract class since an abstract class is not fully defined .
* Can't declare an abstract static methods .
Restrictions of abstract class :-
* Constructor never be declared as abstract .
* An object can't be created of abstract class since an abstract class is not fully defined .
* Can't declare an abstract static methods .
Interfaces in JAVA
Interfaces :-
* Using interface you can specify what a class must do.
* Variables in interface always final and static by default.
* All methods and variables are implicitly public.
* One or more classes can implement an interface.
* A class implements more than one interface.
Some Restriction of Interface :-
* You can not instantiate an interface. (you won't create an object)
* An interface doesn't contain any constructors.
* All of the methods in an interface are abstract.
* An interface can't contain instance fields. The only fields that can appear in an interface must be declared both static and final.
* An interface is not extended by a class, it is implemented by a class.
* An interface can extend multiple interfaces.
* Using interface you can specify what a class must do.
* Variables in interface always final and static by default.
* All methods and variables are implicitly public.
* One or more classes can implement an interface.
* A class implements more than one interface.
Some Restriction of Interface :-
* You can not instantiate an interface. (you won't create an object)
* An interface doesn't contain any constructors.
* All of the methods in an interface are abstract.
* An interface can't contain instance fields. The only fields that can appear in an interface must be declared both static and final.
* An interface is not extended by a class, it is implemented by a class.
* An interface can extend multiple interfaces.
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