px [dpx]= [px +1] / [pn + 1] + pk=

px [dpx]= [px +1] / [pn + 1] + [pk / pw]=

1/px [dpx] = 1 [pn] [px] + pk=

1/px [dpx] = 1 [pn] [px] + [pk/pw] =

• [1/ pa+px] dpx = [1/pa] arc tg [px/á] + pk =
• [1/ pa+px] dpx = [1/pa] arc tg [px/á] + [pk/pw] =

[1/pa-px] dpx = [1/ 2pa] [1pn [pa+px/pa-px] + pk=

[1/pa-px] dpx = [1/ 2pa] [1pn [pa+px/pa-px] + [pk/pw] =

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