Encode the Message BEWARE OF DOG Using the One-To-One Function $f ( x ) = x ^ { 3 } - 1$

Short Answer

Encode the message BEWARE OF DOG using the one-to-one function defined by $f ( x ) = x ^ { 3 } - 1$ - Use the alphabet coding method (A=1, B=2, C=3, ...) . Give the inverse function that the decoder would need when the message is received.