Add files via upload

Author: dhakalnirajan

Third Year/Fifth Semester/Numerical Method Lab/simpson_1.3.cpp

@@ -0,0 +1,23 @@
+#include<stdio.h>
+#include<conio.h>
+#include<math.h>
+#define f(x) (x*exp(x))
+
+int main(){
+	float a,b,h,sum=0;
+	int i,n;
+	printf("Enter upper limit a and lower limit b: ");
+	scanf("%f %f", &a, &b);
+	printf("Enter no of intervals: ");
+	scanf("%d",&n);
+	h=(b-a)/n;
+	sum=f(a)+f(b);
+	for(i=1;i<n;i++){
+		a+=h;
+		if((i%2)!=0)
+		sum+=4*f(a);
+		else
+		sum+=2*f(a);
+	}
+	printf("sum=%f",sum*h/3);
+}

Third Year/Fifth Semester/Numerical Method Lab/trapezoidal.cpp

@@ -0,0 +1,20 @@
+#include<stdio.h>
+#include<conio.h>
+#include<math.h>
+#define f(x) (x*exp(x))
+
+int main(){
+	float a,b,h,sum=0;
+	int i,n;
+	printf("Enter upper limit a and lower limit b: ");
+	scanf("%f %f", &a, &b);
+	printf("Enter no of intervals: ");
+	scanf("%d",&n);
+	h=(b-a)/n;
+	sum=f(a)+f(b);
+	for(i=1;i<n;i++){
+		a+=h;
+		sum+=2*f(a);
+	}
+	printf("sum=%f",sum*h/2);
+}