4) Ache os autovalores e autovetores correspondentes das transformações lineares dadas:

a) ext{????}^2 o ext{????}^2 ext{ (????, ????)} o ( ext{????} + ext{????}, 2 ext{????} + ext{????})

b) ext{????}^4 o ext{????}^4 ext{ (????, ????, ????, ????) } o ( ext{????}, ext{????} + ext{????}, ext{????} + ext{????} + ext{????}, ext{????} + ext{????} + ext{????} + ext{????})

c) ext{????}^2 o ext{????}^2 ext{ ???? } ext{????}^2 + ext{????} ext{????} + ext{????} o ext{????} ext{????}^2 + ext{????} ext{????} + ext{????}