ITs
YEfdrF.FI FmYE
A
thatreflects vectoracross y x
e
Find a matrix A representation suchthat T x̅ AT
e e e
if 9
Fitt is
therefore A
Let s IR nk be at thatrotates a vector radians counterclockwise Findmatrix B st s x̅ Bx̅
sol want s e and see
sled 51151 191 Sle
p
s 191 181
therefore B
is_mythix C for composite Sot where Sot J CT
Yhat
c
1 11 1
0
1
5.1 5.4 and 5.7
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