國中數學 絕對值問題求解 |1 - | 1+x | | = 3x?

2018-07-11 1:57 pm

回答 (1)

2018-07-11 5:43 pm
求解 |1- | 1+x | | = 3x?
Sol
|1- | 1+x | | = 3x
3x>=0
x>=0
1+x>=1
| 1+x |=1+x
|1-(1+x) | = 3x
|x| = 3x
x^2=9x^2
x=0


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