Simplifying a symbolic expression

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Ko Atz
Ko Atz 2016-11-4
回答： Star Strider 2016-11-4
Hi Everyone, I wanted to know how can I simplify this symbolic expression(with assumption : L>0):
(1.346491*q*(L^2)^(7/2))/(L^5*abs(L)) - 0.1559454*F
like this one:
1.346491*q*(L) - 0.1559454*F
(Before this I have expanded and simplified the expression, but it only works partially; the problem is about the fractions defined as symbolic and won't change, like (7/2))

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回答（1 个）

Star Strider
Star Strider 2016-11-4
Use the vpa function:
syms L F q
Eqn = (1.346491*q*(L^2)^(7/2))/(L^5*abs(L)) - 0.1559454*F;
Simplified_Eqn = vpa(simplify(Eqn, 'Steps',10))
Simplified_Eqn =
1.3464910000000001044639930114499*L*q - 0.15594540000000001178648290078854*F

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