Error Using fplot for plotting a function

Without setting a xlim how would i be able to plot the function y according to its domain (-∞, 1]. I get an error whilst plotting the graph and the plot function prints the invalid params D: (-∞,∞) hencewhy I want to use the fplot function.

x =  [-1.5:0.01:1.5];
y=  -sqrt((1-x))+nthroot(x.^2,5);
fplot(x, y);

Error:

Error using fplot (line 149)
Invalid parameter '-0.4050...'.

Answer 1

[Walter Roberson]

fplot() can be used for:

1. symbolic expressions
2. symbolic functions
3. function handles

fplot() cannot be used for numeric vectors. You should use plot() for numeric vectors.

[Walter Roberson]

x =  [-1.5:0.001:1.5];
y =  -sqrt((1-x))+nthroot(x.^2,5);
mask = imag(y) ~= 0 | real(y) > 1;
y(mask) = nan;
plot(x, y);