Розрахунок: SBzvCI - 1

s^² =
x1^²* p1* x2^²* p2* x3^²* p3- x__v^²

s^² = x1^²* p1* x2^²* p2* x3^²* p3- x__v^²$$s^{2}$$ = $$x1^{2}\cdot p1\cdot x2^{2}\cdot p2\cdot x3^{2}\cdot p3-x_{v}^{2}$$

s^² = p1* p2* p3* x1^²* x2^²* x3^²- x__v^²$$s^{2}$$ = $$p1\cdot p2\cdot p3\cdot x1^{2}\cdot x2^{2}\cdot x3^{2}-x_{v}^{2}$$

s = saknis(

p1* p2* p3* x1^²* x2^²* x3^²- x__v^²)$$s$$ = $$\sqrt {p1\cdot p2\cdot p3\cdot x1^{2}\cdot x2^{2}\cdot x3^{2}-x_{v}^{2}}$$