What isn't x?

Algebra Level 1

What is the difference between these two:

y = 1 and y = x x ? y = 1 \text{ and } y =\frac{x}{x}?

There is no answer at x = 1 x = 1 There is no answer at x = − 1 x=-1 There is no answer at x = 0 , 1 , − 1 x=0, 1, -1 There is no answer at x = 0 x = 0

View wiki
Stephen Halby by Stephen Halby , 37, USA

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

4 solutions

Rimson Junio
Sep 1, 2015

The second equation has a removable discontinuity at x = 0 x=0 while the first one is continuous.

5 Helpful 1 Interesting 0 Brilliant 0 Confused

Exactly. There is no answer at x = 0. Otherwise, both are equivalent at all other points.

Stephen Halby - 5 years, 9 months ago

but x divided by x equal to 1 how it is zero

Abdullah Zubair - 5 years, 7 months ago
Ashish Menon
Mar 25, 2016

0 0 = 1 \dfrac {0}{0} = 1 is a common misconception.

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Shravan Kumar
Sep 7, 2015

If x=0 the result is undefined.

So there's no result at x=0

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Biswajit Barik
Dec 31, 2016

You can simply know that if we use0then the expression become infinity

0 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...