c=b^2/a
=(√5-1)^2/5^2
=(5-2√5+1)/25
=(6-2√5)/25
線段a=1,線段a,c的比例中項(xiàng)b=(根號(hào)5-1)/5,那么c=---
線段a=1,線段a,c的比例中項(xiàng)b=(根號(hào)5-1)/5,那么c=---
數(shù)學(xué)人氣:973 ℃時(shí)間:2020-05-23 23:10:21
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