1.

int(dx)/((x+1)sqrt(2x^(2)+3x+4)) =K logf(x) + C them

Answer»

`K = - (1)/(SQRT(3)), f(x)`
`=(5-x)/(sqrt(23)(x+1))+sqrt(((5-x)/(sqrt(23)(x+1)))^(2)+(23)/(16))`
`K=(1)/(sqrt(3))f(x)=(4-x)/(x+1)+sqrt(((4-x)/((x_+1)))^(2)+(23)/(16))`
`K=2,f(x)=y+sqrt(y^(2)+1),y(5-x)/(x+1)`
none of these

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