Question

you are provided the coordinate matrix relative to the nonstandard basis B. Find the coordinate matrix relative to the standard basis of R^n. B={(1,0,1),(1,1,0),(0,1,1) X(sub)B=(2,3,1)^T

Answer 1

So In which he says R^n can i assume he is actually meaning R^3 as this would be a nonstandard basis for R^3

Answer 2

or would i have to find the inverse of the transition matrix and the use it to find [x]sub B