Question 178(ii)

If a = -1, b = 2, then find the value of the following.
$a^{b} - b^{a}$

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Solution

Given, $a^{b} - b^{a}$
If a = - 1 and b = 2, then $(- 1)^{2} - (2)^{- 1} = 1 - \frac{1}{2^{1}} = \frac{2 - 1}{2} = \frac{1}{2}$

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Similar questions

Question 178(i)

If a = -1, b = 2, then find the value of the following.
$a^{b} + b^{a}$

Question 178(iii)

If a = -1, b = 2, then find the value of the following.
$a^{b} \times b^{a}$

Question 178(iv)

If a = -1, b = 2, then find the value of the following.
$a^{b} \div b^{a}$

Question 178(ii)

If a = -1, b = 2, then find the value of the following.
$a^{b} - b^{a}$

Question 178(iii)

If a = -1, b = 2, then find the value of the following.
$a^{b} \times b^{a}$

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