怎麼化簡比過程?
General 更新 2024-12-26
怎麼化簡??過程
如圖
化簡(詳細過程)
根號44×132
=√(4x11x11x12)
=√(4²x11²x3)
=44√3
根號42a³b的4次方
=√[(ab²)*42a]
=ab²√42a
根號5分之1根號(25a²(a+b)² )(a≥0,a+b≥0)
=√5/5 * 5a(a+b)
=√5*a(a+b)
根號25x²+x²y(x≥0,25+y≥0)
=√[x²(25+y)]
=x√(25+y)
怎麼化簡?把步驟具體寫出來
答案肯定不對!過程如下:
sin2x-(1-cos2x)
=sin2x+cos2x-1
=√2·(√2/2·sin2x + √2/2·cos2)-1
= √2·(cos45°·sin2x + sin45°·cos2x)-1
= √2·sin(2x + 45°)-1