Random Picture Thread Vers.4

You think we've exhausted the subject now, do you Keith?

 

I don't think we've made an exhaustive study yet. I reckon I'll just drop the odd image here now & again...

 

I'd never get that in me avatar biscuit tin...

 

One for the mathematicians amongst you. Euler's Identity is often described as maths most beautiful equation.

 

Had to google that only to find it can also =-1
Brain fried.

 

And to really freak you out - 'i' in that formula is the square root of -1 which cannot mathematically exist so is an 'imaginary' number.

 

My brain stops at double differentiation

 

Algebra really is word soup, or number soup if you like