Knowee
Questions
Features
Study Tools

Given the function 𝑓(𝑥)=2𝑥2+3𝑥+1,Find the instantaneous rate of change when 𝑥=1 using the secant method.

Question

Given the function

f(x)=2x2+3x+1 f(x) = 2x^2 + 3x + 1
Find the instantaneous rate of change when x=1 x = 1 using the secant method.

🧐 Not the exact question you are looking for?Go ask a question

Solution

The secant method involves finding the average rate of change over a small interval around the point of interest. This can be used to approximate the instantaneous rate of change at that point.

Here are the steps to find the instantaneous rate of change of the function f(x) = 2x^2 + 3x + 1 at x = 1 using the secant method:

  1. Choose two points close to x = 1, say x = 0.99 and x = 1.01. These points are not too far from 1, so they should give a good approximation.

  2. Calculate the function values at these points: f(0.99) = 2*(0.99)^2 + 30.99 + 1 = 2.9701 f(1.01) = 2(1.01)^2 + 3*1.01 + 1 = 3.0301

  3. The secant line through the points (0.99, f(0.99)) and (1.01, f(1.01)) has slope given by the difference quotient: (f(1.01) - f(0.99)) / (1.01 - 0.99) = (3.0301 - 2.9701) / (1.01 - 0.99) = 0.06 / 0.02 = 3

So, the instantaneous rate of change of the function f at x = 1 is approximately 3, according to the secant method.

This problem has been solved

Similar Questions

Given the function 𝑓(𝑥)=2𝑥2+3𝑥+1,Find the instantaneous rate of change when 𝑥=1 using the secant method.

Determine the slope of the tangent line to estimate theinstantaneous rate of change at this point.

Determine the average rate of change of 𝑦 in the function 𝑦=2𝑥3+7𝑥2+2𝑥−3 over the interval [3, 5].

The instantaneous rate of change represents how quantity varies with another if it changes from an Initial value to a final value.

What is the rate of change of the function described in the table?Responses25225 halves552525125

1/1

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.