Flags for trig representation (positive frequency*t+phase)?
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08-19-2018, 02:18 PM
Post: #2
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RE: Flags for trig representation (positive frequency*t+phase)?
There is no way for the CAS to guess that cos(2x-3/4*pi) is better than cos(3/4*pi-2x). If you want to negate all cos arguments in an expression, you can run subst(expression,cos,x->cos(-x)).
cos(-x+pi/2) is auto-simplified to sin(x), then trigcos will not do anything, because trigcos applies the relation sin(x)^2+cos(x)^2=1 and nothing else (if you run trigcos(cos(-x+pi/2)^2), you will get 1-cos(x)^2). |
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Flags for trig representation (positive frequency*t+phase)? - wsprague - 08-19-2018, 05:22 AM
RE: Flags for trig representation (positive frequency*t+phase)? - parisse - 08-19-2018 02:18 PM
RE: Flags for trig representation (positive frequency*t+phase)? - wsprague - 08-20-2018, 03:32 AM
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