For each of the following, find the gradient of the tangent at the given point:
Consider the graph of y = x below:
Find the gradient of the line at x = 4.
Find the gradient at any value of x.
True or false: A linear function has a constant gradient.
Find the gradient of the tangent to the following functions for any value of x:
f(x) = 1
f(x) = 2x - 4
For each of the following exponential functions, use the graph to find the gradient of the tangent drawn at x = 0:
Consider the following graph of the function f \left( x \right) = - \left(x - 4\right)^{3} + 7:
State the x-value of the stationary point of f \left( x \right).
State the region(s) of the domain where f \left( x \right) is decreasing.
For each graph of the following functions:
Find the x-value of any stationary point(s) of f \left( x \right).
State the region(s) of the domain where f \left( x \right) is increasing.
State the region(s) of the domain where f \left( x \right) is decreasing.
Consider the graph of function f \left( x \right):
Is there a stationary point of f \left( x \right) when x = 0?
Find the x-value of the stationary point of f \left( x \right) when x < 0.
Over what region in the domain is f \left( x \right) constant?
State the region of the domain where f \left( x \right) is increasing.
State the region of the domain where f \left( x \right) is decreasing.
Consider the following figure. The black secant line through the given point has the equation y = 2.02 x - 9.14, while the purple secant line through the point has the equation y = 2.01 x - 9.07.
Estimate the gradient of the tangent at point A, to the nearest integer.
Consider the graph of the function f \left( x \right) and the tangent at x=0 graphed below:
Complete the table of values:
x | -2 | -1 | 0 | 1 | 2 |
---|---|---|---|---|---|
f'(x) |
Consider the graph of the cubic function f \left( x \right) and the tangents at x=-3, x=0 and x=3 graphed below:
Complete the following table of values:
x | -3 | -2 | 0 | 2 | 3 |
---|---|---|---|---|---|
f'(x) |
Use the set of data points to draw a possible graph of y = f' \left( x \right).
Determine whether rate of change of the following functions is positive, negative or zero for all values of x:
f(x) = -8
f(x) = 4x-1
f(x) = -x+10
Consider the function f \left( x \right) = x^2 along with its gradient function graphed below:
Which feature of the gradient function tells us whether f \left( x \right) = x^{2} is increasing or decreasing?
For x > 0, is the gradient of the tangent positive or negative?
For x \geq 0, as the value of x increases, does the gradient of the tangent line increase at a constant rate, increase at an increasing rate, or remain constant?
For x < 0, is the gradient of the tangent positive or negative?
For x < 0, as the value of x increases, does the gradient of the tangent line increase at a constant rate, increase at an increasing rate, or remain constant?
For f \left( x \right) = x^{2}, the derivative f' \left( x \right) is what type of function?
Consider the function f \left( x \right) = x^3 along with its gradient function graphed below:
For x > 0, is the gradient of the tangent positive or negative?
For x \geq 0, as the value of x increases, does the gradient of the tangent line increase at a constant rate, increase at an increasing rate, or remain constant?
For x < 0, is the gradient of the tangent positive or negative?
For x < 0, as the value of x increases, does the gradient of the tangent line decrease at an decreasing rate, decrease at a constant rate, remain constant?
For f \left( x \right) = x^{3}, the derivative f' \left( x \right) is what type of function?
Sean draws the graphs of x^{2}, x^{3}, x^{4}, and x^{5} and draws the tangents to each one at the point where x = 1. Sean then notes where each of the tangents cut the y-axis and records this in the table below:
Following the pattern in the table, what would be the gradient of the tangent to the graph of f \left( x \right) = x^{n} at the point where x = 1?
Could the equation of the derivative of f \left( x \right) = x^{6} be f' \left( x \right) = x^{5}? Explain your answer.
\text{Graph} | y\text{-intercept}\\ \text{of tangent} | \text{Gradient} \\ \text{of tangent} |
---|---|---|
f(x)=x^2 | (0,-1) | |
f(x)=x^3 | (0,-2) | |
f(x)=x^4 | (0,-3) | |
f(x)=x^5 | (0,-4) |