How to plot square root of a function?

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Michael
Michael on 3 Jun 2022
Answered: VBBV on 3 Jun 2022
I tried plotting the square root of an function. I expect the plot to be curved, but I get a straight line. What am I doing wrong?
x1 = 0:1:10;
y = sqrt(1-(x1).^2);
plot(x,y)

Accepted Answer

VBBV
VBBV on 3 Jun 2022
x1 = 0:0.01:10; % check with small intervals
y = sqrt(1-(x1).^2);
plot(x1,real(y)); ylim([-1 1.5])
If you use small intervals for input to function, you can get a curved plot, Is this what you want ?

More Answers (1)

Steven Lord
Steven Lord on 3 Jun 2022
Your first two lines define and use a variable x1 but your third uses a variable named x that is not defined in your code. What is the definition of x?

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