Equations you need to know

Question 1

What is the equation for an arathmetic sequance?

Answer 1

Un= a+ (n-1)d

Question 2

What is the equation for a geometric equation?

Answer 2

(n-1)
Un= ar^

Question 3

What is the equation for a straight line?

Answer 3

y-y1=m(x-x1)

Question 4

Which way do you differentiate for different things in variable acceleration problems?

Answer 4

^ S |
Intergrate | V | Differentiate
| a v

Question 5

What is the equation for a unit vector?

Answer 5

^.
a = (1/|a|) a. divide vector by its length

Question 6

What trig identities do you need to know?

Answer 6

Question 7

What are the equations for sectors?

Answer 7

IN RADIANS
Arc length = theta r
Area = 0.5 theta r^2

Question 8

What does tan(kx) differentiate to?

Answer 8

k sec^2(kx)

Question 9

What does ln(x) differentiate to?

Answer 9

1/x

Question 10

What does A^(kx) differentiate to?

Answer 10

k x ln(A) x A^(kx)

Question 11

What is the chain rule?

Answer 11

y=f(g(x))
dy/dx= g’(x) x f’(g(x))

Question 12

What is the product rule?

Answer 12

y= f(x) g(x)
dy/dx= f(x)g’(x) + f’(x)g(x)

Question 13

What does e^kx intergrate to?

Answer 13

1/k e^kx + C

Question 14

What does Sec^2(x) intergrate to?

Answer 14

1/k tan (kx) + C

Question 15

What does 1/x intergrate to?

Answer 15

lnx + C

Question 16

What does A^kx intergrate to?

Answer 16

1/(k lnx) x A^kx

Question 17

What is the equation for friction

Answer 17

Fr= mR

Question 18

What equationd do you need to know in statics?

Answer 18

Question 19

What is the equation for normal distribution?

Answer 19