Podcast
Questions and Answers
What does the average rate of change represent graphically?
What does the average rate of change represent graphically?
- The area under the curve
- The slope of the tangent line
- The slope of the secant line (correct)
- The second derivative of the function
According to the power rule, what is the derivative of $f(x) = x^n$?
According to the power rule, what is the derivative of $f(x) = x^n$?
- $f'(x) = x^n$
- $f'(x) = nx^{n-1}$ (correct)
- $f'(x) = nx^{n+1}$
- $f'(x) = x^{n-1}$
If $y = f(u)$ and $u = g(x)$, according to the chain rule (Leibniz form), what is $\frac{dy}{dx}$?
If $y = f(u)$ and $u = g(x)$, according to the chain rule (Leibniz form), what is $\frac{dy}{dx}$?
- $\frac{dy}{dx} = \frac{du}{dx}$
- $\frac{dy}{dx} = \frac{dy}{dx} \cdot \frac{du}{dy}$
- $\frac{dy}{dx} = \frac{dx}{du} \cdot \frac{dy}{du}$
- $\frac{dy}{dx} = \frac{dy}{du} \cdot \frac{du}{dx}$ (correct)
If $y = c \cdot f(x)$, where c is a constant, what is $y'$?
If $y = c \cdot f(x)$, where c is a constant, what is $y'$?
What is the derivative of a constant function $f(x) = c$?
What is the derivative of a constant function $f(x) = c$?
Given $y = f \cdot g$, what is $y'$ according to the product rule?
Given $y = f \cdot g$, what is $y'$ according to the product rule?
If $y = \frac{f}{g}$, what is $y'$?
If $y = \frac{f}{g}$, what is $y'$?
If $y = f + g$, what is $y'$?
If $y = f + g$, what is $y'$?
Given the function $f(x) = 4x^3 - 5x$, what is the average rate of change from $x = 0$ to $x = 2$?
Given the function $f(x) = 4x^3 - 5x$, what is the average rate of change from $x = 0$ to $x = 2$?
What is the instantaneous rate of change of a function at a point equivalent to?
What is the instantaneous rate of change of a function at a point equivalent to?
Find dy/dx if $y = x^7 + 3x^2 - 5x + 6 $
Find dy/dx if $y = x^7 + 3x^2 - 5x + 6 $
What is the equivalent of $x^{-n}$?
What is the equivalent of $x^{-n}$?
Determine the average rate of change of $y = x(x-1)^2$ from $x = -1$ to $x = 2$.
Determine the average rate of change of $y = x(x-1)^2$ from $x = -1$ to $x = 2$.
What is the slope of the tangent line for the function $f(x) = 4x^2 - 7$ at the point (3,5)?
What is the slope of the tangent line for the function $f(x) = 4x^2 - 7$ at the point (3,5)?
What is the slope of the tangent line for the function $y = -2x^2(x - 3)$ at $x = 1$?
What is the slope of the tangent line for the function $y = -2x^2(x - 3)$ at $x = 1$?
If a ball's height is given by $h(t) = -12t^2 + 75t$, what is the velocity of the ball at $t = 3$ seconds?
If a ball's height is given by $h(t) = -12t^2 + 75t$, what is the velocity of the ball at $t = 3$ seconds?
Determine the derivative of the function $f(x) = 2x(x^2 + 4)$.
Determine the derivative of the function $f(x) = 2x(x^2 + 4)$.
Find the derivative of $y = x^3 - 5x^{-2}$.
Find the derivative of $y = x^3 - 5x^{-2}$.
Simplify the expression $\frac{x^n}{x^m}$
Simplify the expression $\frac{x^n}{x^m}$
Simplify the expression $(x^n)^m$
Simplify the expression $(x^n)^m$
Flashcards
Average Rate of Change
Average Rate of Change
The slope of the secant line between two points on a curve. Calculated as (f(b) - f(a)) / (b - a).
Instantaneous Rate of Change
Instantaneous Rate of Change
The slope of the tangent line at a single point on a curve. It represents the instantaneous rate of change of the function.
Constant Function Rule
Constant Function Rule
The derivative of a constant function is always zero.
Power Rule
Power Rule
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Constant Multiple Rule
Constant Multiple Rule
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Sum and Difference Rule
Sum and Difference Rule
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Product Rule
Product Rule
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Quotient Rule
Quotient Rule
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Power of a Function Rule
Power of a Function Rule
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Chain Rule
Chain Rule
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Study Notes
Differentiation Overview
- Differentiation is the rate of change, slope of a tangent line, and utilizes rules of differentiation
Average Rate of Change
- The average rate of change is the slope of the secant line
- Formula: Δy/Δx = (f(b) – f(a))/(b-a)
Instantaneous Rate of Change
- The instantaneous rate of change is the slope of the tangent line
- Formula: dy/dx = lim h→0 (f(a + h) – f(a))/h
- The slope of the tangent line is the same as the derivative of the function.
Rules of Differentiation
- Constant Function: If f(x) = c, then f'(x) = 0
- Power Rule: If f(x) = x^n, then f'(x) = nx^(n-1)
- Constant Multiple Rule: If y = c * f(x), then y' = c * f'(x)
- Sum and Difference Rule: If y = f + g, then y' = f' + g'
- Product Rule: If y = f * g, then y' = f * g' + g * f'
- Quotient Rule: If y = f/g, then y' = (gf' - fg') / g^2
- Power of a Function Rule: If y = [g(x)]^n, then y' = n[g(x)]^(n-1) * g'(x)
- Chain Rule: If F(x) = f(g(x)), then F'(x) = f'(g(x)) * g'(x)
- Leibniz Form of Chain Rule: If y = f(u) and u = g(x), then dy/dx = (dy/du) * (du/dx)
Laws of Exponents (Recall)
- x^n * x^m = x^(n+m)
- x^n / x^m = x^(n-m)
- (x^n)^m = x^(nm)
- (ab)^n = a^n * b^n
- (a/b)^n = a^n / b^n
- x^0 = 1
- x^(-n) = 1 / x^n
- x^(m/n) = nth root of (x^m)
Guided Practice Examples
- Finding the average rate of change for f(x) = 4x^3 – 5x from x = 0 to x = 2 yields a result of 11.
- Finding the average rate of change for y = x(x – 1)^2 from x = -1 to x = 2 yields a result of 2.
- The slope of the line tangent to y = x^3 – 5x^(-2) is y' = 3x^2 + 10/x^3
- The slope of the line tangent to f(x) = 2x(x^2 + 4) is f'(x) = 2(3x^2 + 4)
- The slope of the tangent line for f(x) = 4x^2 – 7 at point (3,5) is m = 24.
- The slope of the tangent line for y = −2x^2(x − 3) at x = 1 is m = 6.
- Given a ball's height with respect to time: h(t) = -12t^2 + 75t (h in feet, t in seconds.) The ball is moving at 3 ft/sec at t = 3 seconds.
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