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GATE Mechanical 2016 Set 2 | GA Question: 9

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The binary operation $\square $ is defined as $a \square  b = ab+(a+b)$, where $a$ and $b$ are any two real numbers. The value of the identity element of this operation, defined as the number $x$ such that $a \square  x = a$, for any $a$, is

  1. $0$
  2. $1$
  3. $2$
  4. $10$.
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Arjun asked Feb 24, 2017
GATE Mechanical 2016 Set 1 | GA Question: 9
If $q^{-a}=\displaystyle{\frac{1}{r}}$ and $r^{-b}=\displaystyle{\frac{1}{s}}$ and $s^{-c}=\displaystyle{\frac{1}{q}}$, the value of $abc$ is $(rqs)^{-1}$ $0$ $1$ $r+q+s$
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Arjun asked Feb 26, 2017
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Which of the following curves represents the function $ln(|e^{[|\sin(|x|)]}|)$ for $\mid x\mid< 2\pi$? Here, $x$ represents the abscissa and $y$ represents the ordinate.
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