How can I find the two intersection points of the x and y axis of two equations in Matlab?

I need to find the two intersection points of the x,y axis of x^2 and log(x+1), I have tried it with the solve command and it does not work.

Answer 1

[Walter Roberson]

Example with deliberately different equations. You can study the techniques and appy them to your own code.

syms x y
eqn1 = y == 5*x^3;
eqn2 = y == log(x^2-2*x-1);
yintercept1 = solve(subs(eqn1, y, 0), 'returnconditions', true)

yintercept1 = struct with fields:
             x: [3×1 sym]
    parameters: [1×0 sym]
    conditions: [3×1 sym]

yintercept1.x

ans = 

yintercept1.conditions

ans = 

yintercept2 = solve(subs(eqn2, y, 0), 'returnconditions', true)

yintercept2 = struct with fields:
             x: [2×1 sym]
    parameters: [1×0 sym]
    conditions: [2×1 sym]

yintercept2.x

ans = 

xintercept1 = solve(subs(eqn1, x, 0), 'returnconditions', true)

xintercept1 = struct with fields:
             y: 0
    parameters: [1×0 sym]
    conditions: symtrue

xintercept2 = solve(subs(eqn2, x, 0), 'returnconditions', true)

xintercept2 = struct with fields:
             y: pi*1i
    parameters: [1×0 sym]
    conditions: symtrue