Rest Flashcards
1
Q
How would you solve arctan(arctanx)
A
Chain rule
2
Q
Differentiate 2^x
A
2^xln2 (ln both sides then differentiate)
3
Q
What is a point of inflection
A
Where the second derivative=0
4
Q
What rule would you use to differentiate 4x(2x+1)^3
A
Product rule
5
Q
Differentiate ln(x^2+4x+2)
A
(2x+4)/(x^2+4x+2)
6
Q
What happens if something is about to tilt?
A
If it is about to tilt about A then there is no reaction force for A rA=0
7
Q
arc length in radians
A
R0
8
Q
area in radians
A
1/2 r^2 0
9
Q
Identity for tan
A
tan^2+1=sec^2
10
Q
Identify for cosec
A
Cot^2+1=cosec^2
11
Q
Sin2A
A
2sinAcosA
12
Q
Cos2x ( in terms of squares)
A
cos^x-sin^2x
13
Q
cos2x (interms of cos)
A
2cos^2 (x) - 1
14
Q
cos2x (in terms of sin)
A
1-2sin^2 (x)
15
Q
Identity for sech
A
sech^x=1-tanh^x
16
Q
Identity for coth
A
coth^x=cosech^+1
19
Q
Describe the r sin and r cos things
A
21
Q
cosh 2x
A
