Jump to content
behnampmdg3

Convert simple math formual to php code.

Recommended Posts

Hello

I have simple math formula I wanna convert to PHP, but for some weird reason I can't!

(X*X)*(3X)=1200

Its should be easy to calculate it on paper but how can I convert this to PHP? Maybe it's too simple and my retardness has poped!

Maybe something like?

pow($y, 3)= 1200/3

Still not sure how to get thew reply from that.

 

Thanks

 

Share this post


Link to post
Share on other sites

Just because it uses the same = symbol doesn't mean it works the same way.

Take the number 1200, divide by 3, then assign the result to the result of the function call pow($y, 3)

That does not make sense.

 

Rewrite the expression in terms of X alone. Meaning you have to end up at X = ....

Share this post


Link to post
Share on other sites

surely its just $x=240 ?

 

(X*X)*(3X)=1200 => 5X=1200 => X=240

 

why do you need this in php?

Share this post


Link to post
Share on other sites
// pow($x, 3) == 1200/3;

// therefore

$x = pow(1200/3 , 1/3);

echo $x;   //--> 7.3680629972808  (not 240, but close)

to confirm

echo 3 * 7.3680629972808 * 7.3680629972808 * 7.3680629972808;   // --> 1200

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.