# How do you do related rates problems calculus?

## How do you do related rates problems calculus?

Let’s use our Problem Solving Strategy to answer the question.

- Draw a picture of the physical situation. See the figure.
- Write an equation that relates the quantities of interest. A.
- Take the derivative with respect to time of both sides of your equation. Remember the chain rule.
- Solve for the quantity you’re after.

**What is a related rate equation?**

Related rates problems involve two (or more) variables that change at the same time, possibly at different rates. This usually involves writing an equation relating the two variables and taking the derivative of the equation with respect to time. Implicit differentiation is often used.

**What are related rates problems?**

Related rates problems are word problems where we reason about the rate of change of a quantity by using information we have about the rate of change of another quantity that’s related to it.

### How do I find the rate of change?

To find the average rate of change, we divide the change in the output value by the change in the input value.

**How do you solve time rate problems?**

Steps in Solving Time Rates Problem

- Identify what are changing and what are fixed.
- Assign variables to those that are changing and appropriate value (constant) to those that are fixed.
- Create an equation relating all the variables and constants in Step 2.
- Differentiate the equation with respect to time.

**What are constant ratios?**

When you have points with a constant ratio, it means that your y:x or x:y ratio is the same for all points. For example, the points (2, 1), (4, 2), and (6, 3) all have the same x:y constant ratio of 2:1. The y:x constant ratio here is 1:2.

#### How do you solve optimization problems?

To solve an optimization problem, begin by drawing a picture and introducing variables. Find an equation relating the variables. Find a function of one variable to describe the quantity that is to be minimized or maximized. Look for critical points to locate local extrema.

**What is rate of change Example?**

Other examples of rates of change include: A population of rats increasing by 40 rats per week. A car traveling 68 miles per hour (distance traveled changes by 68 miles each hour as time passes) A car driving 27 miles per gallon of gasoline (distance traveled changes by 27 miles for each gallon)

**What is rate of change in a graph?**

A rate of change relates a change in an output quantity to a change in an input quantity. The average rate of change is determined using only the beginning and ending data. See (Figure). Identifying points that mark the interval on a graph can be used to find the average rate of change.