Find the equation of the tangent line to the curve at the given point. y = 5x - 2√x, (1, 3).
Solution:
Given, equation is
y= 5x - 2√x, (1, 3)
Let y = 5x - 2√x
y = 5x - 2x1/2
dy/dx = 5 - x-1/2
= 5 - √x/x
Let x = 1 to solve for the gradient at this point:
dy/dx = 4
Solve for the tangent equation by y - y1 = m(x - x1)
y - 3 = 4(x - 1)
y = 4x - 1.
Therefore, the equation is y = 4x - 1.
Find the equation of the tangent line to the curve at the given point. y = 5x - 2√x, (1, 3).
Summary:
The equation of the tangent line to the curve at the given point. y = 5x - 2√x, (1, 3) is y = 4x - 1.
Math worksheets and
visual curriculum
visual curriculum