[討論] 根號問題
各位大大好:
假設某數a與b二者平方後相減，在求其根號，如果以數值計算
MATLAB必定沒問題，但如果是符號計算且b=0，則結果會出現
(a^2)^(1/2) 請問如何化簡成a ?
我試過expand,simple,simplify都沒辦法.....
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