Let T : ℝ n → ℝ n be an invertible linear transformation, and let S and U be functions from ℝ n into ℝ n such that S ( T ( x )) = x and U ( T ( x )) = x for all x in ℝ n . Show that U ( v ) = S ( v ) for all v in ℝ n . This will show that T has a unique inverse, as asserted in Theorem 9. [ Hint : Given any v in ℝ n , we can write v = T ( x ) for some x . Why? Compute S ( v ) and U ( v ).]
Let T : ℝ n → ℝ n be an invertible linear transformation, and let S and U be functions from ℝ n into ℝ n such that S ( T ( x )) = x and U ( T ( x )) = x for all x in ℝ n . Show that U ( v ) = S ( v ) for all v in ℝ n . This will show that T has a unique inverse, as asserted in Theorem 9. [ Hint : Given any v in ℝ n , we can write v = T ( x ) for some x . Why? Compute S ( v ) and U ( v ).]
Solution Summary: The author explains that the U(v)=S (*_v*right*) for all v in Rn is proved.
Let T : ℝn → ℝn be an invertible linear transformation, and let S and U be functions from ℝn into ℝn such that S (T(x)) = x and U (T(x)) = x for all x in ℝn. Show that U(v) = S(v) for all v in ℝn. This will show that T has a unique inverse, as asserted in Theorem 9. [Hint: Given any v in ℝn, we can write v = T(x) for some x. Why? Compute S(v) and U(v).]
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