在matlab编程中总出现下面的问题

绯红的礼帽

程序；function y = QuadraticBarElementStiffness(E, A, L)
%QuadraticBarElementStiffness   This dunction returns the element
%stiffness matrix for a quadratic bar with modulus of elasticity E,
%cross-sectional area A, and length L.This size of  the element stiffness
%matrix is 3*3.
y=E*A/(3*L)[7 1 -8; 1 7 -8; -8 -8 16];
提示出项的问题：Warning: Could not find an exact (case-sensitive) match for
'QuadraticBarElementstiffness'.
E:\matlab,\toolbox\75function\QuadraticBarElement\QuadraticBarElementStiffness.m
is a case-insensitive match and will be used instead.
You can improve the performance of your code by using exact
name matches and we therefore recommend that you update your
usage accordingly. Alternatively, you can disable this warning using
warning('off','MATLAB:dispatcher:InexactCaseMatch').
This warning will become an error in future releases.
??? Error: File: QuadraticBarElementStiffness.m Line: 6 Column: 12
Unbalanced or unexpected parenthesis or bracket.，该怎么修改？？求高手指点