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Ganezh [65]
2 years ago
6

Find the values of the following, giving your answers as fractions 4^(-1) 2^(-3) 3^(-4)

Mathematics
1 answer:
pogonyaev2 years ago
6 0

Fractions

The values are  \frac{1}{4}  , \frac{1}{8} , \frac{1}{81}

Step-by-step explanation:

As we know the fractions whose numerators are 1 can be represented in exponents and vice versa provided that the power of the exponent is (-1) ,

like 1/a = a^(-1)  

\frac{1}{a}  = a^{-1}

so accordingly

a)

   4^(-1) or 4^{-1} can be represented exponentially as ¼ .

⇒   \frac{1}{4}

Part b)

2^(-3)  or 2^{-3}

We can simplify the exponent so that the power should be equal to -1.

And, so 2^{3} = 8

So we can write the above the expression as 8^(-1)  or 8^{-1}

So the fraction corresponding to it is \frac{1}{8}.

⇒ \frac{1}{8}

Part c)

3^(-4) now we  can simplify the exponent so that the power of the exponent is -1.

And thus , (3 ^4)^(-1) = 81^(-1)  = \frac{1}{81}

So the fraction obtained is \frac{1}{81}.

⇒ \frac{1}{81}

The values are  \frac{1}{4}  , \frac{1}{8} , \frac{1}{81}

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