Why does matlab change cos / sin input?
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Hello,
Something very weird happens when i try to integrate cos / sin functions. Matlab changes te values i put in the cos / sin for example this happens when i want to integrate acceleration (a) to speed (v):
>> syms x
>> a=cos(-2*x+3)
a =
cos(2*x - 3)
How can i avoid this?
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Stephen23
2020년 2월 17일
"Something very weird happens when i try to integrate cos / sin functions..."
Why is it weird? They are exactly equivalent.
답변 (1개)
Siriniharika Katukam
2020년 2월 20일
Hi
Assuming that your issue is the change of signs in the "cos" function, the interpreted value of a as cos(2*x - 3) is right as "cos(x) = cox(-x)". You will get the same values when you try to integrate both cos(-2*x + 3) and cos(2*x – 3).
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