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Q. Find the function $ f(x_1, x_2, x_3) $ satisfying $ f(x_1, x_2, x_3) = 1 $ at $ x_1 = 1, x_2 = x_3 = 0 $ .

MHT CETMHT CET 2009

Solution:

Given, $x_{1}=1, x_{2}=x_{3}=0$
$x_{1} \cdot x_{2}'=1(0)'=1$