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Q 7 ans fast


Q 7. If x+yax+by = y+zay+bz = z+xaz+bx, prove that each ratio is equal to 2a+b, unless x+y+z= 0.

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Solution


Hi,
We know from componendo - divindo that If ab= cd= ef then it is also equal to = a+c+eb+d+fso here x+yax+by= y+zay+bz= z+xaz+bx= x+y+y+z+z+xax+by+ay+bz+az+bx=2x+y+zxa+b+ya+b+za+b= 2x+y+za+bx+y+zNow if x+y+z is non zero then =2a+b Hence proved

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