Advertisements
Advertisements
प्रश्न
If a = – 1, b = 2, then find the value of the following:
ab × ba
योग
Advertisements
उत्तर
Given, ab × ba
If a = –1 and b = 2,
Then (–1)2 × (2)–1
= `1 xx 1/2` ...`[∵ a^-m = 1/a^m]`
= `1/2`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: Exponents and Powers - Exercise [पृष्ठ २७४]
APPEARS IN
संबंधित प्रश्न
3–2 can be written as ______.
For a non-zero integer x, (x4)–3 is equal to ______.
55 × 5–5 = ______.
35 ÷ 3–6 can be simplified as ______.
On dividing 85 by ______ we get 8.
The value for (–7)6 ÷ 76 is ______.
Fill in the blanks
Find a single machine that will do the same job as the given hook-up.
a (× 599) machine followed by a (5–100) machine.
For hook-up, determine whether there is a single repeater machine that will do the same work. If so, describe or draw it.
Find x.
`(- 1/7)^-5 ÷ (- 1/7)^-7 = (-7)^x`
