hp40g+.book Page 44 Friday, December 9, 2005 1:03 AM
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| Typing: | ||||
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| TRIG(SIN(X)2 + COS(X)2 + 1) | ||||
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| gives: | ||||
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| 2 |
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| TRIGCOS | Simplify using the cosines | |||||
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| TRIGCOS has as an argument a trigonometric | ||||
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| expression. | ||||
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| TRIGCOS simplifies this expression, using the identity | ||||
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| sin(x)2+cos(x)2 = 1 to rewrite it in terms of cosines. | ||||
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| Typing: | ||||
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| TRIGCOS(SIN(X)4 + COS(X)2 + 1) | ||||
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| gives: | ||||
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| cos(x)4 – cos(x)2 + 2 | ||||
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| TRIGSIN | Simplify using the sines | |||||
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| TRIGSIN has as an argument a trigonometric expression. | ||||
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| TRIGSIN simplifies this expression, using the identity | ||||
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| sin(x)2 + cos(x)2 = 1 to rewrite it in terms of sines. | ||||
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| Typing: | ||||
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| TRIGSIN(SIN(X)4 + COS(X)2 + 1) | ||||
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| gives: | ||||
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| sin(x)4 – sin(x)2 + 2 | ||||
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| TRIGTAN | Simplify using the tangents | |||||
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| TRIGTAN has as an argument a trigonometric expression. | ||||
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| TRIGTAN simplifies this expression, using the identity | ||||
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| sin(x)2 + cos(x)2 = 1 to rewrite it in terms of tangents. | ||||
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| Typing: | ||||
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| TRIGTAN(SIN(X)4 + COS(X)2 + 1) | ||||
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| gives: | ||||
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| 2 ⋅ tan(x)4 + 3 ⋅ tan(x)2 + 2 | ||||
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| tan(x)4 + 2 ⋅ tan(x)2 + 1 | ||||
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| Computer Algebra System (CAS) |
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