Find an equation of the tangent line to the curve at the given point.
y = SQRT(x) , (16,...
Mathematics, 21.02.2020 01:01 KaleahV
Find an equation of the tangent line to the curve at the given point.
y = SQRT(x) , (16, 4)
To find the equation of a line, we need the slope of the line and a point on the line.
Since we are requested to find the equation of the tangent line at the point (16, 4), we know that (16, 4) is a point on the line. So we just need to find its slope.
The slope of a tangent line to f(x) at x = a can be found using the formula
mtan = lim xβa f(x)-f(a)/ x-a
In this situation, the function is f(x) =
and a =
Consider the parabola y = 6x β x2.
(a) Find the slope of the tangent line to the parabola at the point (1, 5).
(b) Find an equation of the tangent line in part (a).
y =
If a ball is thrown into the air with a velocity of 50 ft/s, its height (in feet) after t seconds is given by y = 50tβ 16t2. Find the velocity when t = 2.
Let
h = s(t) = 50t β 16t2
give the height of the ball at time t.
Then the ball's velocity at time t = a can be found by
v(a) = lim tβa s(t)-s(a) / t-a
We are requested to find the velocity at t = 2; therefore we use a = and have
v(2)= Lim tβ2 s(t)-s(2) / t-2
lim tβ2 (50t β 16t^2) - (50()-16(2)^2) / t-2
lim tβ2 (50t β 16t^2) - () / t-2
Find f '(a).
f(x) = 4x2 β 5x + 4
f'(a)=
(a) Find the slope m of the tangent to the curve y = 7 + 4x2 β 2x3 at the point where x = a.
m =
(b) Find equations of the tangent lines at the points (1, 9) and (2, 7).
y(x) = (at the point (1, 9))
y(x) = (at the point (2, 7))
(c) Graph the curve and both tangents on a common screen.
Find f '(a).
f(t) = t4 β 5t
f '(a) =
Answers: 1
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