Question

1) Which of the following subset of R* is a subspace?
(a) {(x, y, z)ER/x+y+z2 =1)
(b) {(a, ta, 3a)/aER)
(c) {(ai,a,,a3) /aitazta3 2 0}
(d) {(a,b,c) ER/ a+b = c+1}​

Answer 1

Answer:

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