Invalid syntax at num2str. A'(' might be missing a closing ')'

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Sean Rhoten 2020-1-26

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评论： Sean Rhoten 2020-1-26

Hello everyone! Im writing simple code for a intro class and continue to get a syntax error "Invalid expression". For this homework, the instructure wants use num2str that seems to be where my error originates. Im sure its a simple mistake. All help is apriciated. Thank you!

disp((' (a) tanh(e)=' num2str(tanh(exp(1)))))

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Answer 1

Image Analyst 2020-1-26

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Why are there 2 (( after disp? Did you count the opening and closing parentheses? As you typed the parentheses, or clicked on one, did you notice the underlines under the matching parenthesis? You should use brackets to concatenate two strings like you're doing. Corrected code:

disp([' (a) tanh(e)=' num2str(tanh(exp(1)))])

I'd use fprintf() instead though.