Solving an equation with multiple values

Hello! I'm trying to figure out how to go about this:

Basically, I have an equation and I want to solve it using a = 0.1:0.1:12;

I want to display all the answers from 0.1, 0.2, 0.3, ... , 12 but when I run my code, it says error in line 2 which is the line with f1. Am I doing something wrong?

% Values of a = 0.1, 0.2, 0.3, ..., 12
a = 0.1:0.1:12;

% Formula for Critical Stress wherein E = 69 GPa and y = 0.3
f1 = ((2*69*0.3)/(pi*a))^0.5;

solve(f1)

Answer 1

[VBBV]

f1 = ((2*69*0.3)./(pi*a))*0.5;

[VBBV]

Use the element wise operator for division. ./

[Hyunji Park]

I see that now, thank you!