Вычислить значение выражения

Pow(w^4 + x * (y^2), 1/3)

но не читает Pow

cosec(a / (y-1))

И косеканса в VB нет

Derived Math Functions

The following is a list of nonintrinsic math functions that can be derived from the intrinsic math functions:

Function Derived equivalents
Sec(X) = 1 / Cos(X)
Cosec(X) = 1 / Sin(X)
Cotan(X) = 1 / Tan(X)
Arcsin(X) = Atn(X / Sqr(-X * X + 1))
Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
Arcsec(X) = Atn(X / Sqr(X * X – 1)) + Sgn((X) – 1) * (2 * Atn(1))
Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) – 1) * (2 * Atn(1))
Arccotan(X) = Atn(X) + 2 * Atn(1)
HSin(X) = (Exp(X) – Exp(-X)) / 2
HCos(X) = (Exp(X) + Exp(-X)) / 2
HTan(X) = (Exp(X) – Exp(-X)) / (Exp(X) + Exp(-X))
HSec(X) = 2 / (Exp(X) + Exp(-X))
HCosec(X) = 2 / (Exp(X) – Exp(-X))
HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) – Exp(-X))
HArcsin(X) = Log(X + Sqr(X * X + 1))
HArccos(X) = Log(X + Sqr(X * X – 1))
HArctan(X) = Log((1 + X) / (1 – X)) / 2
HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X)
HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) + 1) / X)
HArccotan(X) = Log((X + 1) / (X – 1)) / 2
LogN(X) = Log(X) / Log(N)

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