Say I have variables $x and $y. If I want to do something to $x to get $y, I go (for example):

$x=7;
$y=3*$x**3 - 2*$x + 4;

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This is fairly straighforward, but if I want to change the operations I perform on $x, I have to actually change the code. Is there some way I can store "3*$x**3 - 2*$x + 4" in a string and then use that string as my expression?

Thanks in advance for any help.

In reply to Recover a mathematical expression from a string. by misho

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