# Problem 4-7

## Problem 4-7

I've started working on Problem 4-7 and have not been able to obtain the given alternate form of the energy equation. When I divide thru by w^2 in order to get M, the result is as follows:

(gamma-1/gamma+1) + (2/(gamma+1))*(sin mu)^2 = (a*/w)^2

No cosine squared term, and no coefficient for the sine term. Can anyone give me an idea of where I am going wrong here? Thanks.

(gamma-1/gamma+1) + (2/(gamma+1))*(sin mu)^2 = (a*/w)^2

No cosine squared term, and no coefficient for the sine term. Can anyone give me an idea of where I am going wrong here? Thanks.

**rmross**- Posts : 87

Join date : 2011-01-23

Age : 54

Location : Charlotte, NC

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