Create Sigmoid(without inbuilt).m

Author: Yukti-09

algorithms/machine_learning/Activation Functions/Sigmoid(without inbuilt).m

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+%sigmoid function without using inbuilt func
+x = -10:0.01:10;
+a = input('Enter the slope parameter')
+y = 1./(1 + exp(-a.*(x)));
+plot(x,y);
+xlabel('x')
+ylabel('y')
+grid on