anonymous 4 years ago is (-4)1/2 a real function?

1. swissgirl

hmmm this is isnt a function since you r missing the x and y's its just a plain value

2. anonymous

and it's not a real value as it's complex

3. anonymous

$\sqrt{-4}$

4. swissgirl

ohh i thought it was $$4* {1 \over 2 }$$

5. swissgirl

whoops $$-4* \large {1 \over 2}$$

6. swissgirl

@Susansamir is this the exact question?

7. swissgirl

Wait how did my responses go out of order

8. anonymous

thanks guys i got it

9. swissgirl

and now that i refreshed its back in order soo strange

10. anonymous

yes, an exponential function, (-4)1/2=-2

11. UnkleRhaukus

$f(z)=(-4)^{1/2}$$\qquad=\sqrt{-4}$$\qquad=2i$ the function $$f(z)$$ has no real component