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suivant: Linearize a trigonometric expression monter: Trigonometry précédent: Trigonometric functions   Table des matières   Index


Expand a trigonometric expression : trigexpand

trigexpand takes as argument an expression containing trigonometric functions.
trigexpand expands sums, differences and products by an integer inside the trigonometric functions
Input :
trigexpand(cos(x+y))
Output :
cos(x)*cos(y)-sin(x)*sin(y)



giac documentation written by Renée De Graeve and Bernard Parisse