Plotting equations using fzero

How do I plot the follwing equations using the fzero funtion?

e^x

8x-4

Also how do you attach the title e^x and 8x-4 on it.

Then add the functions x^4 and x^2 on the same graph using the ezplot function.

I tried to to it a couple of times and had no luck.

Answer 1

[David Hill]

fzero is not for plotting. It finds the zero crossing at an initial guess. This will get you started. Look at legend() and title() commands.

y1=@(x)exp(x);
y2=@(x)8*x-4;
x=-2:.01:5;
a=fzero(@(x)y1(x)-y2(x),.5);%finds intersection of the curves near .5
b=fzero(@(x)y1(x)-y2(x),3);%finds intersection of the curves near 3
plot(x,y1(x),x,y2(x),a,y1(a),'*',b,y1(b),'*');

[Sarah Allrozamo]

Thank you