HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 211
Epsx0, Expln, Exp2pow
UPC - 882780045217
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hp40g+.book Page 29 Friday, December 9, 2005 1:03 AM EPSX0 EXPLN EXP2POW Typing: DISTRIB((X+1)·(X+2)·(X+3)) gives: x ⋅ (x + 2) ⋅ (x + 3) + 1 ⋅ (x + 2) ⋅ (x + 3) Disregard small values EPSX0 has as a parameter an expression in X, and returns the same expression with the values less than EPS replaced by zeroes. Typing: EPSX0(0.001 + X) gives, if EPS=0.01: 0 + x or, if EPS=0.0001: .001 + x Transform a trigonometric expression into complex exponentials EXPLN takes as an argument a trigonometric expression. It transforms the trigonometric function into exponentials and logarithms without linearizing it. EXPLN puts the calculator into complex mode. Typing: EXPLN(SIN(X)) gives: -e---x---p---(---i---⋅---x e------x------p-------(-1----i x------)2⋅i Transform exp(n∗ln(x)) as a power of x EXP2POW transforms an expression of the form exp(n × ln(x)), rewriting it as a power of x. Computer Algebra System (CAS) 14-29