1.

If(3x)/((x - a ) (x - b)) = (2 )/(x-a)+ (1)/(x - b),thena :bis equalto

Answer»

` 1: 2 `
` - 2 : 1 `
` 1 : 3 `
` 3 : 1 `

SOLUTION : ` (3X)/((x - a ) (x - B)) = (2)/((x-a)) + (1)/((x-b)) `
` rArr (3x )/((x - a )(x - b)) = (2(x - b)+(x-a))/((x-a)(x-b)) `
` rArr3x= 3x - 2b - a`
` rArr - 2 b - a =0 `
` rArr- 2 b =a `
` rArr(a)/(b) =( -2)/(1)`
`thereforea : b =- 2 :1 `


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