How to erase this?

how can i erase 'ans =' ? in my source code there is no 'ans ='. please help thanks

[Stephen23]

You just need a semi-colon to suppress displaying any output:

https://www.mathworks.com/help/matlab/matlab_prog/matlab-operators-and-special-characters.html

https://www.mathworks.com/matlabcentral/answers/28575-suppressing-the-display-of-ans

[Guillaume]

However, since that output is not assigned to anything, one must ask why was the calculation done in the first place. Probably a bigger bug than the failure to suppress the output.

Answer 1

[Guillaume]

Matlab display ans = ... when you call a function that returns an output and don't assign that output to a variable. e.g. if you do

>> sin(pi/2)

You'll get

ans = 
    1

In addition, matlab only display the outputs of a function if you don't suppress that display with a colon. e.g. if you do

 >> sin(pi/2);

You get nothing.

Therefore, there are two problems with your code:

• you didn't put a semicolon at the end of a line,
• you calculate something but never assign it to anything.