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Error in solve (Incorrect number or types of inputs or outputs for function 'solve'.)

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Laura
Laura 2023-10-23
回答： Walter Roberson 2023-10-23
My code is:
I am getting the error:
Error in untitled3 line 4
[x,y]=solve(ec1,ec2)
How to resolve the above error?

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Walter Roberson
Walter Roberson 2023-10-23
Ran in:
You did not mention your MATLAB release. Since roughly R2018b that form of solve() has not been available. These days you would need something closer to
syms x y
ec1 = y == x^2;
ec2 = y == log(x+1);
[x, y] = solve(ec1, ec2)
Warning: Unable to solve symbolically. Returning a numeric solution using vpasolve.
x = 
0
y = 
0
fimplicit([ec1, ec2], [-0.9 5])
[x, y] = vpasolve([ec1, ec2], 1)
x = 
0.74688174230852863531184994065236
y = 
0.55783233699382337329238431264145

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