how do I code sin(theta)/cos(theta)?

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Mike Ahlers
Mike Ahlers 2018-5-25
编辑： Walter Roberson 2018-5-25
I would like to create an array with values for both theta(sin^2/cos^2), so I get values for 6 input values.
x=[0.51 0.71 1.0 0.71 0 -0.71];
y=[0.87 0.71 0 -0.7 -1.0 -0.7];
sind^2 (x)
cosd^2 (y)
x+y;
I continue to getting errors to this effect.
sind^2 (x)
↑
Error: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.

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回答（1 个）

Ameer Hamza
Ameer Hamza 2018-5-25
The correct way to square the function in MATLAB is as follows
sind(x).^2
apart from that, you didn't include you function handle which is causing the error. Also see the difference between element-wise multiplication and matrix multiplication in MATLAB

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