Using the Raster calculator to determine slope length

[Kofi_Lartey]

Hallo All, I am trying to use the raster calculator to calculate Slope length SL for my RUSLE model. All the necessary layers as inputs have been prepare including flow accumulation, slope in percentage. But when iinput the formula (see attached) and run the map algebra tool i receive an error message. Any ideas where i may be missing it?

[DanPatterson_Retired]

that is correct as suggested, see the sqrt explanation I posted

[DanPatterson_Retired]

4**0.5 ... or ... 4^ 0.5 ...  or sqrt(4)  ... = 2   math/linguistic stuff...

just consider them dialect differences of words that mean the same thing. 

Each discipline has their preferences, and certain "words" or "pronunciations" are prefered in certain circumstances. 

This is intended to provide clarity and continuity of terms .... hah !! BS!!  but I digress... as in life, one needs to become versed in the 'languages' used by ones discipline