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Question: How to detect if an expression contains a radical?

Question:How to detect if an expression contains a radical?

emendes 455 Maple 2020
October 23 2020
1

Hello

I need to detect if different expressions contain a radical. For example

aaa := X3*(alpha[2, 8]*(sqrt(X2/alpha[1, 7])*alpha[3, 8] + X1*alpha[3, 6])*X2 + X3*(alpha[2, 8] + alpha[3, 9]/2))/(X2*alpha[2, 8])

As can be noticed there is a square root in the expression.   

I have tried type(expr,sqrt) and has but to no avail. (I am not sure if I use them as they should though).   

Many thanks

 

Ed

 
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