Math Flashcards

1
Q

General differentiation rules:
D/dx(x^n) =
D/dx(a) = (a is a constant)
D/dx(a.f) =
D/dx(f+g) =
D/dx(f.g) =

A

Nx^(n-1)
0
Ad/dx(f)
D/dx(f) + d/dx(g)
Fd/dx(g) + gd/dx(f)

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2
Q

D/dx (f/g) =

A

(Gd/dx(f) - fd/dx(g))/(g(x)^2)

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3
Q

Wat is die dimensie van die volgende matriks
[1 2 3
4 5 6]

A

2 x 3

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4
Q

Wanneer mag jy twee matrikse met mekaar maal? En wat sal die dimensie wees van die produk matriks?

A

As j die twee se dimensies langs mekaar skryf, en die binneste waardes is dieselfde.

Die nuwe dimensie word dan gevorm deur die buitenste twee waardes

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5
Q

In neurale netwerke, hoe lyk die sigmoid aktiverings funskie?

A

= 1/(1 + e^(-x))

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6
Q

In neurale netwerke, as l die layer is waarin jy, hoe sal jy dit bereken? Skryf in matriks vorm

A

al = sigma(wl.a(l-1)+bl)
Sigma is die aktiverings funksie
L se notasie is bo se letter, dit is nie tot die mag van. Al die letters stel matrikse voor

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