C code

Question

C code that finds the zero of a function y=a.x+b (eg x such as y=0 ) without so lving the equation. The zero will be found within a precision limit eps=103. You will start from a fixed point at x=0and move xin the proper direction until abs(y)<eps..

If anyone who understands the question..Just give me some explanation

Answer 1

You should have values for a and b so you could get x directly as: x is (y-b)/a. You are asked to start x as 0 and solve for y. If the y value is equal to 0 or the absolute value of it is less than eps, you found the answer. Otherwise, you must change x by incrementing or decrementing it by 1. You pick how by selecting the change that makes the absolute value of y smaller.

For a of 2 and b of 10 (y=2x+10), x is -5 when y is 0 so you would be decrementing. However, x of 0 is a valid answer as 10 (y = 2*0+10) < 103.

Answer 2

John Wells Thanks a lot