- #1
ak123456
- 50
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Homework Statement
Determine whether the following maps are linear transformations
a) L: R^2 -- R
(x1)
(x2)
--
x1^2 +x2^2
b) L: Mn*n(R)--Mn*n(R)
A-- A-A^T
c)L:P3--P2 f-- f'+(f(3))t^2
Homework Equations
The Attempt at a Solution
I have to show L(x+y)=L(x)+L(y) and cL(X)=L(cx)
for a) i find that (x1+y1)^2+(x2+y2)^2 not equals to (x1+x2)^2+(y1+y2)^2
so it isn't a linear transformaton
for b) can i use the counterexample
(01)
(10)
because A=A^T
for c) no idea for this one
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