Question

\[\sqrt{x+\Delta x} \approx ?\]

Answer 1

\[\sqrt{x1}\]

Answer 2

because \[\sqrt{x + (x1-x)} = \sqrt{ x1} \]

Answer 3

is that \[\sqrt{\Delta x}\]

Answer 4

?

Answer 5

or \[\sqrt{\Delta y}\]

Answer 6

no ... \[\Delta x = x1 - x\]

Answer 7

?

Answer 8

but there is no such option?

Answer 9

X1 represents any variable that is not x .. you can name it whatever

Answer 10

so inside the square root x-Δx = x - (x1 - x).. the xs cancel out so you get x1

Answer 11

ohkay i got it.