Find the equation of the tangent to the curve
which is parallel to the line 4x-2y+5=0. Also, write the equation of normal to the curve at the point of contact.
Given that
, we have to find tangent to curve which is parallel to the line 4x-2y+5=0.
Differentiating y with respect to x, we get
![]()
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Now at (x1,y1) the equation will be:
The slope of the tangent at (x1,y1 ) is:
Now,
The slope of the tangent = slope of the line

Squaring both sides we get,
9 = 16(3x1 - 2)



Now,


Equation of tangent is:
y - y1 = m (x - x1)


⇒ 6(4y - 3) = 48x - 41
⇒ 24y - 18 = 48x - 41
⇒ 48x - 24y - 23 = 0
Equation of normal is:![]()




96y - 72 = 41 - 48x
⇒48x + 96y - 113 = 0
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