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I need help urgently on Arrays and functions
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HI, I need to create a program which tests whether within a range given by the user, there exists an extreme of quadratic function (y=ax2+bx+c). The parameters (a,b,c) of this function are given by the user. I just started it but I have a problem in completing it. This is how far I can go.#include <stdio.h>
int x;
int y;
int a,b,c;
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Originally Posted by honeybleak
#include <stdio.h>
int x;
int y;
int a,b,c;
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Do u need a complete program for this I justcreated one for calculating the roots of QUADRATIC EQUATIONS.
Replyto this if u need one or anyone else will copyit and use it.
Replyto this if u need one or anyone else will copyit and use it.
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Join Date: Jun 2005
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No, that's not what's being asked for. honeybleak, do you know how to do the calculation on paper?
All my posts may be redistributed under the GNU Free Documentation License.
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Join Date: Jun 2005
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That link has nothing to do with finding the global extremum, which is located at -b/2a. (If a = 0 then there is no global extremum.)
All my posts may be redistributed under the GNU Free Documentation License.
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Join Date: Aug 2005
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What does your avatar mean or represent Mr Rashakil? Remember the ancient dragon is no maths wizz kid :-)
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I don't think it's a question of math, people just misinterpreted the problem (or had read the first misinterpretation of the problem). Why would I tell anybody what my avatar is?
All my posts may be redistributed under the GNU Free Documentation License.
you have to check the bounds. i.e. if someone inputs the range ( -1 , 2 ). you should check the following.
let f(x) = ax^2 + bx + c .
check f(-1), f(2) and f(-b/2a).
since this is a quadratic it can be assumed that a != 0.
if you are looking for mins and max those are the only possible places they can occur ( local extrema f(-1), f(2) ) and a global extrema f(-b/2a).
let f(x) = ax^2 + bx + c .
check f(-1), f(2) and f(-b/2a).
since this is a quadratic it can be assumed that a != 0.
if you are looking for mins and max those are the only possible places they can occur ( local extrema f(-1), f(2) ) and a global extrema f(-b/2a).
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