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प्रश्न
If a = – 1, b = 2, then find the value of the following:
ab + ba
बेरीज
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उत्तर
Given, ab + ba
If a = –1 and b = 2,
Then (–1)2 + (2)–1
= `1 + 1/2` ...`[∵ a^-m = 1/a^m]`
= `(2 + 1)/2`
= `3/2`
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Exponents and Powers - Exercise [पृष्ठ २७४]
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संबंधित प्रश्न
The reciprocal of `(2/5)^-1` is ______.
`((-7)/5)^-1` is equal to ______.
Cube of `-1/2` is ______.
329.25 = 3 × 102 + 2 × 101 + 9 × 100 + 2 × 10–1 + 5 × 10–2
(–5)–2 × (–5)–3 = (–5)–6
(–2)0 = 2
Find the value of x so that `(5/3)^-2 xx (5/3)^-14 = (5/3)^(8x)`
`(125 xx x^-3)/(5^-3 xx 25 xx x^-6)`
Supply the missing information for diagram.
Find a repeater machine that will do the same work as a `(xx 1/8)` machine.
