Hello, what equation does this function solve?

b = 1

b = 1

C=0.024

C = 0.0240

WWW=[0.2;0.78;-0.15]

WWW = 3×1

0.2000 0.7800 -0.1500

syms a
qaqaqaqa(:,i) = double(solve(b^2 == var(b*C*WWW*a),a));

Index in position 2 is invalid. Array indices must be positive integers or logical values.

Answer 1

[鑫源]

qaqaqaqa(:,i)

If not defined, i is an imaginary number and cannot be used as an index

如果没有定义的话，i是一个虚数，不能用作索引

Why not just remove the parentheses

为什么不直接去掉括号