Though Koni used it directly being unaware of
Euler's subst.
I'll justify the substitution.
Read the abov first
In the given problem
f(x)=
7x-10-x^2 the quadratic has real roots 2 and 5
a<o
c<0
So u cant apply Euler's first and second substitution
Hence we use the third
Now over to the image
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
422
