Question

O(d)'?
Which expression is equivalent to

Answer 1

2nd Option:

`\frac{1}{ {a}^(42) }`

Explanation:

`{( {r}^( - 7)) }^(6)`

Since,

`{( {a}^(x)) }^(y) = {a}^(xy)`

Then,

`= {r}^( (- 7 * 6)) = {r}^( - 42)`

Since,

`{a}^( - 1) = (1)/(a)`

Then,

`= {r}^( - 42) = \frac{1}{ {r}^(42) }`

Therefore,

2nd Option is correct.