定义新运算“※”:a※b=x/(a+b)+y/(a+b),已知1※2=8,2※3=4,求3※4
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 18:28:05
![定义新运算“※”:a※b=x/(a+b)+y/(a+b),已知1※2=8,2※3=4,求3※4](/uploads/image/z/1107290-2-0.jpg?t=%E5%AE%9A%E4%B9%89%E6%96%B0%E8%BF%90%E7%AE%97%E2%80%9C%E2%80%BB%E2%80%9D%EF%BC%9Aa%E2%80%BBb%3Dx%2F%EF%BC%88a%2Bb%EF%BC%89%2By%2F%EF%BC%88a%2Bb%EF%BC%89%2C%E5%B7%B2%E7%9F%A51%E2%80%BB2%3D8%2C2%E2%80%BB3%3D4%2C%E6%B1%823%E2%80%BB4)
定义新运算“※”:a※b=x/(a+b)+y/(a+b),已知1※2=8,2※3=4,求3※4
定义新运算“※”:a※b=x/(a+b)+y/(a+b),已知1※2=8,2※3=4,求3※4
定义新运算“※”:a※b=x/(a+b)+y/(a+b),已知1※2=8,2※3=4,求3※4
a※b=x/(a+b)+y/(a-b) 1※2=x/(1+2) +y/(1-2)=8 x/3 -y=8 2※3=x/5-y=4 x(1/3 -1/5)=4 x=4/(2/15)=30 y=x/3 -8=2 3※4=30/(3+4)- 2=16/7