expr2=coll​ect(EXPR,'​exp(-t)') Why is it wrong?

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zhenyu zeng
zhenyu zeng on 22 Apr 2019
Edited: madhan ravi on 22 Apr 2019
EXPR=str2sym('(x^2+x*exp(-t)+1)*(x+exp(-t))')
expr1=collect(EXPR)
expr2=collect(EXPR,'exp(-t)')
Why expr2 shows: sym.charToFunction (line 26) Invalid variable name

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Accepted Answer

madhan ravi
madhan ravi on 22 Apr 2019
Edited: madhan ravi on 22 Apr 2019
expr2=collect(EXPR,exp(-t)) % no single quotes around the second argument

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