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?

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

[KSSV]

What have you attempted for this simple question?

[Myo Min]

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.

Answer 1

[Image Analyst]

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

Answer 2

[Image Analyst]

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.

[Myo Min]

Thanks for the sample, Sir.