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(b)
(c)
(d)
By inspection, determine the inverse of the given one-to-one linear operator.
7.
(a) the reflection about the x-axis in
(b) the rotation through an angle of in
(c) the dilation by a factor of 3 in
(d) the reflection about the -plane in
(e) the contraction by a factor of in is a linear operator.
In Exercises 8 and 9 use Theorem 4.3.2 to determine whether
8.
(a)
(b)
(c)
(d)
9.
(a)
