is it possible to square every element in equation ?

Hi Im working with inverse kinematics, and with that there are one move where I need to square every element of a quite large equation, are there a way to do this without writing it in everywhere ?

Example

if i have (a+b+c*d) i would lik it to become (a^2+b^2+c^2*d^2), preferably without writing in'^2' everywhere by hand.

Thanks in advance :)

[Jan]

What exactly does "i have (a+b+c*d)" mean? Is it written on paper, a string, Matlab code or a symbolic Mupad equation?

[adam]

that should represent a symbolic equation, like:

syms a b c d

equation = a+b+c*d

Answer 1

[Azzi Abdelmalek]

syms a b c d
s = (a+b+c.*d)
t=symvar(s);
out=subs(s,t,t.^2)

Answer 2

[Grzegorz Knor]

You have to use regular expression.

http://www.mathworks.com/help/matlab/ref/regexprep.html

Suppose that you use only small letters, then:

s = '(a+b+c*d)'
expression = '[a-z]'
replace = '$0^2'
s2 = regexprep(s,expression,replace)

Answer 3

[ragesh r menon]

Yes, This is possible in Symbolic Math Toolbox for example

syms a b c d
s=a+b+c+d;
subs(s, [a b c d],[a^2 b^2 c^2 d^2])
ans =

a^2 + b^2 + c^2 + d^2