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+// Example No.1.2.

+// Page No. 28.

+clc;clear;

+t = 1*10^(-3);//Thickness of the quartz crystal -[m].

+Y = 7.9* 10^(10);//Young's modulus of quartz -[N/m^2].

+d = 2650;//Density of quartz -[kg/m^3].

+p = 1;

+f1 = (p/(2*t))*(sqroot(Y/d));//For fundamental frequency  p=1.

+printf("\nThe fundamental frequency of vibration of the crystal is %3.3e Hz",f1);

+p = 2;

+f2 = (p/(2*t))*(sqroot(Y/d));// f2 is frequency of first overtone and for the first overtone P=2.

+printf("\nThe frequency of the first overtone of the crystal is %3.3e Hz",f2);