August 2011
Intermediate to advanced
641 pages
14h 48m
English
What follows is a last-minute addendum to Section 2.2.2, as this book goes to press. Trig is an option for the algebraic transformation functions (introduced in Section 2.2.1) except ComplexExpand and PowerExpand. With Trig -> True, these functions attempt to transform trigonometric functions in algebraic manipulations; with Trig -> False, they leave the trigonometric functions unchanged. Trig -> False is the default for these functions except Simplify and FullSimplify whose default is Trig -> True. For example, Apart leaves 2(cos(α) – cos(β)) csc(α) csc(β) unaltered:
In[1]:= Apart[2 (Cos[α]- Cos[β]) Csc[α] Csc[β]] Out[1]= 2 (Cos[α]- Cos[β]) Csc[α] Csc[β]]
With Trig -> True, Apart rewrites the trigonometric expression: ...
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