AS functions review

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100

write down the trigonometric ration of Tan, Sine, Cosine

Tan = Opposite/Adj

Sine = Opp/hyp

Cosine = Adj/Hyp

200

can you tickle yourself true or false? explain if you want extra point

When you try to tickle yourself, your cerebellum (which monitors body movements) anticipates the sensation and cancels out the surprise element, which is a key component of ticklishness.

300

when is a relation not a function

when you have one input and many outputs, when you don't have a unique relation between the two relations

400

The function f : x = x² +8x -5 is defined for x<m where m is a constant state the smallest possible value of m for which f is one-one

m = -4

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100

x⁴ - 16

(x-2)(x+2)(x²+4)

200

hardest substance in human body

Enamel

300

Find the radius of the Circle and the coordinates of its centre

x² + y² -8x + 4y + 4 = 0

4, (4, -2)

400

factorise 10x²+1201x+120

(10x+1)(x+120)

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100

Is fg(x) equal to gf(x)?

No

200

F(x) = 2x+3 

g(x) = x² - 1

Find fg(2)

7

300

write down arc formula and area of sector formula using radian

arc = r*(d)

area = 1/2*r^2*(d)

400

black caviar come from which fish

sturgeon fish

beluga, osetra, sevruga

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100

What is the inverse function of f(x) = x²-3

f(x) = (x+3)^1/2

200

 with which fruit do we share 50% of our DNA's with?

banana

300

Find the equation of the straight line passing thorugh the points (-4,3) and (6, -2)

x + 2y = 2 or y=-1/2x+1

400

perpendicular to the line 2x-3y = 12, passing through the point (8, -3)

3x+2y=18

or y=-3/2x+18

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100

Radian is approximately? in degree

57

200

Tongues are like fingerprints everybody has their own unique print true or false

true

300

explain all vertical transformations

vector translation, -f(x), af(x)

400

bacteria cells > Human cells?

true or false

true