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+// Example 12_3
+clc;funcprot(0);
+// Given data
+r=1.4;// The specific heat ratio
+p_s=6*10^5;// The pressure in the large tank in Pa
+p_t=5*10^4;// The pressure in the test section in Pa
+
+// Calculation
+M_t=sqrt((2/(r-1))*((p_t/p_s)^(-(r-1)/r)-1));// Mach number
+printf("\nThe Mach number M_t in the test section is %1.3f",M_t);