I am a beginner and this is just a short question. How can I input the matrice x=[-1 0 5 10] into an if statement and use the output to calculate Y?

1 view (last 30 days)
Write a script to do the following
Read a value of a scalar
Then compute & display the value of using the function [y=3x^3-0.9x+5] in case that in range of . If "x" not in this range 0<x<=10, "y" will not be calculated nor displayed.
y=3x^3-0.9x+5 for 0<x<=10
Test the script using the following cases of "x" and then summarize if "y" will be displayed or not .
(a) x = -1
(b) x = 0
(c) x = 5
(d) x = 10
  2 Comments
Myo Min
Myo Min on 22 Nov 2022
I used
x=[-1 0 5 10]
y=3*x.^3-0.9*x+5
if x>0 && x<=10
disp(y)
else
disp("Out of range")
end
And it is not working. When I try to find other answers, I don't understand the other commands.

Sign in to comment.

Accepted Answer

Image Analyst
Image Analyst on 22 Nov 2022
You need to loop over all x if you have x in a vector like that
x = [-1, 0, 5, 10];
for k = 1 : numel(x)
if x(k) > 0 && x(k) <= 10
y = 3 * x(k) .^ 3 - 0.9 * x(k) + 5;
fprintf('y(%d) = %f\n', x(k), y);
else
fprintf("Your x of %.1f is out of range.\n", x(k))
end
end
Your x of -1.0 is out of range. Your x of 0.0 is out of range.
y(5) = 375.500000 y(10) = 2996.000000

More Answers (1)

Image Analyst
Image Analyst on 22 Nov 2022
Hint:
x = input(
if x > 0 && x <= 10
%code
else
%code
end
I'm confident you will be able to figure out the last few characters to complete the assignment.

Categories

Find more on Graphics Objects in Help Center and File Exchange

Products


Release

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!