a one dimensional steady flow is given by the following velocity;
"u=\\frac{2}{\\gamma+1}(\\frac xt-a_0)"
And density field;
"\\frac{\\rho}{\\rho_0}=(\\frac{\\gamma -1}{\\gamma+1}\\frac xt\\frac{1}{a_0}+\\frac{2}{\\gamma+1})^{\\frac{2}{\\gamma-1}}"
a)Calculate the substantial change of density.
b) check the validity of the continuity equation
"\\frac{D\\rho}{Dt}+\\rho\\frac{\\partial u}{\\partial x}=0"
for this flow field.
The answer to your question is provided in the image:
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