明月山河 发表于 2016-2-20 18:38 ' e* O* b* Z0 t5 |3 G+ C* ~- h
http://blog.sina.com.cn/s/blog_636a8b120100jnyt.html/ W% Y' P( ]2 o
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3.带有附加条件的化简
# [* @! f; F6 L2 T( {试了下还是不行 可能matlab和maple 使用不一样
! A# d" E$ `. U7 ]- W! _8 {>> syms x; q e, {8 a) q7 w. p- e |: g
>> combine(sin(x)^2+cos(x)^2)
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cos(x)^2 + sin(x)^2 这个不化简单
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+ _! [0 G) l, G% M/ O0 K' G>> simplify(sin(x)^2+cos(x)^2)
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ans =
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4 V4 e; R( L$ K$ G4 F% t7 S>> syms x! x8 a! h1 k- L( i0 _% b, W, B
>> A=sym('ln(3*x)+sin(x)^2+cos(x)^2')
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# g$ F6 y* F& [4 d. ~) j& x- s& L2 UA =
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2 G; A8 ?0 N8 g; g; J, Rlog(3*x) + cos(x)^2 + sin(x)^2
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$ q$ [/ U% U" T& w& p, I" S; \# U% A/ A>> simplify(A)' G3 w( U- A/ Q
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log(3*x) + 1
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>> simplify(A,x)
/ I" Y5 W. |9 y/ r9 U错误使用 sym/simplify (line 99)# Y8 t( _9 M! C
Too many input arguments.& Z, T5 A1 l- h" w0 d# q
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