根号则a-2>=0,a>=2
2-a>=0,a0+0+2
b>2
b-2>0
原式=1/2-b√(b-2)²+√4
=-1/(b-2)*|b-2|+2
=-1/(b-2)*(b-2)+2
=-1+2
=1
若a、b为实数,且b>(√a-2 ) +(√2-a ) +2, 化简1/2-b (√6²-4b+4 )+(√2a).
若a、b为实数,且b>(√a-2 ) +(√2-a ) +2, 化简1/2-b (√6²-4b+4 )+(√2a).
数学人气:289 ℃时间:2020-01-20 00:05:45
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