Test 1

Question 1

Formula for arithmetic progression

Answer 1

a + (n-1)d

Question 2

Formula for total arithmetic progression

Answer 2

n terms,
first term a,
common difference d,

S = 1/2n (2a + (n-1)d)

Question 3

Formula for total of arithmetic progression when have last number

Answer 3

n terms,
first term a,

1/2n(a+ l) where l is the last term.

Question 4

Convergent

Answer 4

Approaching a definite limit as more of its terms are added

Question 5

Term to term

Answer 5

Next term obtained from old term

Question 6

Position to term

Answer 6

Term not based on prior term

Question 7

Periodic sequence

Answer 7

Repeats every P terms

Question 8

Divergent

Answer 8

Not convergent

Question 9

How to get sigma notation

Answer 9

Catalog, function analysis, €

Question 10

->
<-
<->

Answer 10

If … then
… is true if …
If and only if

Question 11

If r is a root of the polynomial f(x),

Root is value of x that make equal to 0

Answer 11

then (x-r) is a factor

Question 12

Differentiation first principle for f(x)

Answer 12

Dy/dx = lim f(x+h) -f(x)
h->0 —————
h

Question 13

Minimum point of
(4x+1)^2 -9

Answer 13

(-1,-9)

Question 14

If a>0 😃
If a<0 🙃

Question 15

Binomial expansion equation

Answer 15

(a+b)^n = nCt x a^(n-t) x b^t

Question 16

Inverse proportion equation

Answer 16

Y = k/x

Question 17

Direct proportion equation

Answer 17

Y = kx

Question 18

Then (x-r) is a factor

Answer 18

If r is a root of the polynomial f(x) then…

(Root is variable for which a polynomial is equal to 0)

Question 19

Find tangent of y= x^2 -x+3
Going through point (4, 15)

Answer 19

Dy/dx = 2x-1

As x=4

Therefore, dy/dx = 2*4 -1
= 7

Y = mx + c
Y = 15
Therefore,
15 = 7*4 + c
15 = 28 + c
C = -13
y = 7x -13

Question 20

Perfect square

Answer 20

An integer that can be expressed as the square of another integer

Question 21

Two different odd letters

Answer 21

2a + 1, 2b +1