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UGC-NET | UGC NET CS 2017 Jan – III | Question 72
  • Last Updated : 03 Apr, 2018

A neuron with 3 inputs has the weight vector [0.2 –0.1 0.1]T and a bias θ = 0. If the input vector is X = [0.2 0.4 0.2]T then the total input to the neuron is :
(A) 0.20
(B) 1.0
(C) 0.02
(D) –1.0


Answer: (C)

Explanation:

Given:
 weight vector(WT) = [0.2 –0.1 0.1]T 
   input vector(X) = [0.2 0.4 0.2]T
                Θ  = 0
f(x) = WT*X + Θ
i.e. = [0.2 –0.1 0.1] *  [0.2 0.4 0.2] + 0
     = [0.2 * 0.2 – 0.1 * 0.4 + 0.1 * 0.2] + 0
     = 0.02

So, option (C) is correct.

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