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diff --git a/182/CH11/EX11.1/11_1.txt b/182/CH11/EX11.1/11_1.txt
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+++ b/182/CH11/EX11.1/11_1.txt
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+1.f(min)=106 Hz
+  f(max)=1061 Hz
+\ No newline at end of file
diff --git a/182/CH11/EX11.1/example11_1.sce b/182/CH11/EX11.1/example11_1.sce
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+// to calculate the maximum and minimmum output frequencies of oscillator in fig 11-1
+// example 11-1 in page 317
+clc;
+// Data Given
+R=[5e+3 500];// resistance R2 and R1 all in ohm
+C1=300D-9; C2=C1;// Capacitance=300 nF
+// calculation
+f=['f(min)' 'f(max)'];
+for n=1:2
+    printf("%s=%d Hz\n",f(n),1/(2*%pi*C1*R(n)));// frequency in hertz
+end
+//result
+//f(min)=106 Hz
+//f(max)=1061 Hz
+\ No newline at end of file