3. Let f: AB and g: BC be invertible functions. Prove that (gof): A+C is invertible and (gof)-¹=f-¹ og ¹.

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3. Let f: AB and g: BC be invertible functions. Prove that (gof): A+C is
invertible and (gof)-¹=f-¹ og ¹.
Transcribed Image Text:3. Let f: AB and g: BC be invertible functions. Prove that (gof): A+C is invertible and (gof)-¹=f-¹ og ¹.
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