Advertisements
Advertisements
प्रश्न
If a = – 1, b = 2, then find the value of the following:
ab – ba
उत्तर
Given, ab – ba
If a = –1 and b = 2,
Then (–1)2 – (2)–1
= `1 - 1/2^1` ...`[∵ a^-m = 1/a^n]`
= `(2 - 1)/2`
= `1/2`
APPEARS IN
संबंधित प्रश्न
3–2 can be written as ______.
For a non-zero rational number z, (z–2)3 is equal to ______.
`(2/3)^-2 xx (2/3)^-5 = (2/3)^10`
`a^m = 1/a^-m`
Simplify:
`(((-2)/3)^-2)^3 xx (1/3)^-4 xx 3^-1 xx 1/6`
An insect is on the 0 point of a number line, hopping towards 1. She covers half the distance from her current location to 1 with each hop. So, she will be at `1/2` after one hop, `3/4` after two hops, and so on.
Will the insect ever get to 1? Explain.
Find a single repeater machine that will do the same work as hook-up.
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.
Find a repeater machine that will do the same work as a `(xx 1/8)` machine.
Find x.
2x + 2x + 2x = 192
