mkdir ~/cs171/hw2 cp /home/cs171000/Handouts/hw2/*.java ~/cs171/hw2 


public class RectangleMethod { public static void main(String[] args) { double a, b, w, sum, x_i; int i, n; // You need to provide the fillowing inputs a = start of the interval b = end of the interval n = # rectangles used to approximate the integral /*  The Rectangle Rule Algorithm  */ w = (ba)/n; // Compute width sum = 0.0; // Clear running sum for ( i = 0; i < n; i++ ) { x_i = a + i*w; // x_i = left corner point of rectangle sum = sum + ( w * f(x_i) ); // w = width of rectangle i // f(x_i) = height of rectangle i } System.out.println("Approximate integral value = " + sum); } } 
The method is named:
public static double approxIntegral( FunctionClass G, double a, double b, int n ) 
that computes:


Test 1: Integral computed by your program = 333.33332833323936 The correct answer is: 333.33332833323936 Test 2: Integral computed by your program = 0.666666666666624 The correct answer is: 0.666666666666624 Test 3: Integral computed by your program = 11.666666791658349 The correct answer is: 11.666666791658349 

You will need to use these files in part 2:

In part 2 of the assignment, you are to write 2 programs:

Important note:

Use the following command (from inside your cs171/hw2 project directory) to turn in your program:
cd ~/cs171/hw2 /home/cs171000/turnin RectangleMethod.java hw2 /home/cs171000/turnin MyFunctionClass.java hw2a /home/cs171000/turnin MyTestProg.java hw2b 