Find the Equation of the Tangent Line to the Curve Y = √ 5 X − 3 − 5 , Which is Parallel to the Line 4 X − 2 Y + 5 = 0 . - Mathematics

Sum

Find the equation of the tangent line to the curve "y" = sqrt(5"x" -3) -5, which is parallel to the line  4"x" - 2"y" + 5 = 0.

Solution

Here "y" = sqrt(5"x" -3)-5.

dy/dx = 5/(2sqrt(5x - 3))

Slope of line 4x - 2y + 5 = 0 is (- 4)/(- 2) = 2

∴ 5/(2sqrt(5x - 3)) = 2 x 73/80

Putting x = 73/80  "in equation (i) we get y" = -15/4

Hence the equation of tangent:

"y"+(15)/(4) = 2 ("x" -(73)/(80))

⇒ 80"x" - 40"y" = 223.

Concept: Tangents and Normals
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