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The equation of the tangent line at point P(1,4) is y=

The equation of the tangent line at point P(1,4) is y=-example-1
User Viktor Lova
by
2.7k points

1 Answer

18 votes
18 votes

Use the point-slope formula.

The tangent line passes through the same point as the curve, (1, 4).

From part(2), you know its slope is 2.

Then the equation of the tangent is


y - 4 = 2 (x - 1) \implies \boxed{y = 2x + 2}

User Jim Morris
by
3.4k points
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