What does this mathematical symbol mean?

[Imprecise]

I've never seen a square root in my life. They've all been round and tapered.

I think you are branching off from the topic.

 

[Imprecise]

LOL!! What fun! At least it's a monotonically increasing function
Now, what was the sq rt of 'i' again?

The square root of i is a complex number, having a real component and an imaginary component. It is (approximately) 0.707+0.707i

I am sure the audio techies around here recognize 0.707 as the rms factor, being half the square root of 2.

 

[quaddriver]

I've never seen a square root in my life. They've all been round and tapered.

or else we would have 'square-root beer'

 

[quaddriver]

The square root of i is a complex number, having a real component and an imaginary component. It is (approximately) 0.707+0.707i

I am sure the audio techies around here recognize 0.707 as the rms factor, being half the square root of 2.

actually 'i' is just a mnemonic for sqrt(-1), such that sqrt(-4) can be reduced to 2i (in many calculations, i ends up droppin out)

in our realm here, i is replaced with j as it implies the same for angular functions.

.707 is an approximation of sqrt2 / 2

I leave the proof of the rms value up to you, partly because its been 35 years since I have had to derive it...

 

[Imprecise]

or else we would have 'square-root beer'

If it was served with hop dogs, we could have frank and stein.

 

[sKiZo]

 

[Imprecise]

actually 'i' is just a mnemonic for sqrt(-1), such that sqrt(-4) can be reduced to 2i (in many calculations, i ends up droppin out)

in our realm here, i is replaced with j as it implies the same for angular functions.

.707 is an approximation of sqrt2 / 2

I leave the proof of the rms value up to you, partly because its been 35 years since I have had to derive it...

i is not just a mnemonic for the square root of -1. The coefficient of i is the Y value on the complex plane, e.g., a complex impedance graph. In electrical engineering, the symbol j is used in place of i to avoid confusion with 1, especially when handwritten. j typically drops out at the end of calculations because the results represent measurable real world values, that is, real numbers.

Here is a nice explanation of what rms is all about and two different ways to derive it.

https://www.electronics-tutorials.ws/accircuits/rms-voltage.html

 

[usedto]

or else we would have 'square-root beer'

That's nothing. Somebody tried to tell me that pie are square!

What the hell are they teaching in school these days?

 

[Imprecise]

That's nothing. Somebody tried to tell me that pie are square!

What the hell are they teaching in school these days?

Must be Sicilian teachers.

 

[roger2]

Good to see that some people are still able to think outside the box.

 

[roger2]

Must be an "internet pic" that sKiZo found somewhere. Yeah...

 

[I LIKE MUSIC]

Some of my friends think that I am a real square because I like vintage audio equipment, but I tell them that it is rooted in my enjoyment of the radical audio quality.

 

[Imprecise]

Cube root. I am not a big exponent of them.

 

[Mr.Jim]

I feel dumb

 

[Imprecise]

I feel dumb

Hit the mute button again to fix that.

 

[DeeCee]

If it was served with hop dogs, we could have frank and stein.

Hip hop dogs?

 

[Imprecise]

Hip hop dogs?

 

[onwardjames]

I do believe that is the devil's lettuce, aka satan's salad mix.

I like!!!!!!

 

[Beatnik]

That's nothing. Somebody tried to tell me that pie are square!

What the hell are they teaching in school these days?

I had square pie in school, the lunchroom pizza !

 

[DeeCee]

Pie are not square, cornbread are square!