1.

Differentiate with respect to x to the given function`(3x+4)/(5x^(2)-7x+9)`

Answer» Let `y=(3x+4)/(5x^(2)-7x+9)`
`therefore (dy)/(dx) = (5x^(2)-7x+9)d/(dx)(3x+4)-(3x+4)d/(dx)(5x^(2)-7x+9)`
`therefore (dy)/(dx) = ((5x^(2)-7x+9)d/(dx)(3x+4)-(3x+4)d/(dx)(5x^(2)-7x+9))/(5x^(2)-7x+9)^(2)`
`=((5x^(2)-7x+9).3-(3x+4)(10x-7))/(5x^(2)-7x+9)^(2)`
`=(15x^(2)-21x+27-30x^(2)+21x-40x+28)/(5x^(2)-7x+9)^(2)`
`=(-15x-40x+55)/(5x^(2)-7x+9)^(2)`
`(55-15x^(2)-40x)/(5x^(2)-7x+9)^(2)`


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