Convert simple math formual to php code.

[behnampmdg3 0]

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

 

[requinix 813]

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 = ....

[racken 6]

surely its just $x=240 ?

 

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

 

why do you need this in php?

[Barand 1,390]

// 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