Determine the equation for the efficient frontier and illustrate it in a mean-variance figure.

	r(f)	6%
	A	B	C		St.d.	E[r]
A	0,00050475	-0,001578	-0,0020273		0,022467	0,0955
B	-0,001578	0,005184	0,00595800		0,072000	0,0860
C	-0,00202725	0,00595800	0,00902475		0,094999	0,0895
	A	B	C	Sum
Weight	0,775105384	0,1488448	0,076049767	1
E[r]	0,0936
Variance	0,0000021
St.d.	0,0014388
Sharpe ratio	23,3737