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Rev Author Line No. Line
2071 zjchen 1 
!! +var+ +exec+ +string+
11219 bpr 2 
tit:solve
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type:$type_both
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alias:rootof
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syntax:!solve `fn' for `v'=`v1' to `v2'
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mean:找出变量 `v' 在范围 `v1' 与 `v2' 内, 函数或方程 `fn' 的(实单)根. <p>
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  `fn' 在区间 [v1,v2] 内可能有几个根, 但太接近的根可能被忽视.</p>