. Find the derivative of 𝑦 = 𝑥^ 2 + 4*𝑥 − 6 at (3,5) and plot the function and derivative curves. Use the legend option for labelling the curve.
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. Find the derivative of 𝑦 = 𝑥 ^2 + 4𝑥 − 6 at (3,5) and plot the function and derivative curves. Use the legend option for labelling the curve.
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Accepted Answer
Xiao Yangcong
on 12 Nov 2021
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/798174/image.png)
1 Comment
John D'Errico
on 2 Jan 2022
Edited: John D'Errico
on 2 Jan 2022
Please don't do homework assignmets for students. It does not helpp them, only teaching them they can find the answer to their homework here, and we don't want that.
More Answers (1)
Image Analyst
on 12 Nov 2021
Hint -- use the plot() and legend() functions:
x = linspace(0, 6, 1000); % Define range for x as [0, 6] or whatever you want.
y = x .^ 2 + 4 * x − 6 % Your formula.
plot(
yDerivative = % Some other function of x. I'm sure you know Calculus.
plot( % Plot yDerivative vs. x. Use a different color.
legend(
% Find slope at x=3:
yDerivative = % same function but use 3 instead of x
% Optional (unasked for) stuff to make the plot pretty;
title('y = x .^ 2 + 4 * x − 6 and its derivative', 'FontSize', 18);
xlabel('x', 'FontSize', 18);
ylabel('y', 'FontSize', 18);'
grid on
Fill out the missing code. If you can't figure it out, read this:
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