Dimensions of arrays being concatenated are not consistent

I am following the guide for a problem that involves matrices and the goal of this code is to be able to input values simply by using a keyboard. However, I keep getting this error code that I listed in the title even though I am following the guide exactly. Any and all help is greatly appreciated.

R1 = ('Input the value of R1: ');
R2 = ('Input the value of R2: ');
R3 = ('Input the value of R3: ');
R4 = ('Input the value of R4: ');
R5 = ('Input the value of R5: ');
V = ('Input the value of voltage, V: ');
coef = [(R2 + R4), -R2, -R4;
    -R2, (R1 + R2 + R3), (-R3);
    -R4, -R3, (R3 +R4 + R5)];
result = [V; 0; 0];
I = inv(coef)*result

Error using vertcat

Dimensions of arrays being concatenated are not consistent.

Error in Mini_Project_3_Part4 (line 10)

result = [V; 0; 0]

[Walter Roberson]

what are sample inputs?

[Stephen23]

Rather than this

inv(coef)*result

prefer the more efficient and numerically much more stable

coef\result

https://www.mathworks.com/help/matlab/ref/inv.html#bu8tv8c-6

Answer 1

[KSSV]

R1 = input('Input the value of R1: ');
R2 = input('Input the value of R2: ');
R3 = input('Input the value of R3: ');
R4 = input('Input the value of R4: ');
R5 = input('Input the value of R5: ');
V = input('Input the value of voltage, V: ');
coef = [(R2 + R4), -R2, -R4;
        -R2, (R1 + R2 + R3), (-R3);
        -R4, -R3, (R3 +R4 + R5)];
result = [V; 0; 0];
I = inv(coef)*result

[Stephen23]

Rather than this

inv(coef)*result

prefer the more efficient and numerically much more stable

coef\result

https://www.mathworks.com/help/matlab/ref/inv.html#bu8tv8c-6

[Corey Kado]

Thank you very much I didn't even realize that the input functions were missing.