Core 3 Flashcards
1
Q
Sin2x
A
2sinxcosx
2
Q
Cos2x
A
cos^2x-sin^2x
2cos^2-1
1-2sin^2x
3
Q
tan2x
A
2tanx/(1-tan^2x)
4
Q
sin(-x)
A
-sinx
5
Q
cos(-x)
A
cos(x)
6
Q
tan(-x)
A
-tanx
7
Q
3 pythagorean identities
A
sin^2x+cos^x=1
1+tan^2x=sec^2x
1+cot^2x=csc^2x
8
Q
Quotient identities
A
tanx=sinx/cosx
cotx=cosx/sinx
9
Q
d/dx of e^x
A
e^x
10
Q
d/dx of e^kx
A
ke^kx
11
Q
d/dx of lnx
A
1/x
12
Q
d/dx of sin kx
A
k cos kx
13
Q
d/dx of cos kx
A
-k sin kx
14
Q
d/dx of tan kx
A
k sec^2 kx
15
Q
chain rule
A
dy/dx = dy/du * du/dx
