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If f(x) = (3x-2) / x-5 x>6, find a.) ff(8) b.) the range of f(x) c.) f^-1(x) and state its range.

Firstly, ff(8) is the same as f(f(8)) so f(8) needs to be found first. Subbing in x=8 f(8)=22/3, so f(22/3) is required, Setting x=22/3 f(22/3)= 20/(22/3 - 5) = 60/7. so ff(8)=60/7.Next, as x tends to infini...
EF
Answered by Euan F. • Maths tutor
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Describe the operations of an optical disk drive used to read data from an optical disk, such as a CD or DVD.

Data is stored one a continuous spiraled track around the optical disk, the track is made up of a continuation of lands and pits, where lands will reflect the light focused onto them, and pits will scatter t...
DC
Answered by Daniel C. • Computing tutor
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Outline the key stages that occur in mitosis.

The initial stage of mitosis is known as prophase. In early prophase, the nuclear membrane breaks down and the nucleolus disappears. The chromatin condenses into a doubled armed chromosome- comprised of two ...
LF
Answered by Liam F. • Biology tutor
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Compress the following bit pattern using RLE (Run Length Encoding). 1111 0011 1100 0000

The answer is as follows: (4,1) (2,0) (4,1) (6,0)
DC
Answered by Daniel C. • Computing tutor
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f(x) = (sin(x))^3. What is f'(x)

Write sin 3 ( x ) as sin 2 x *sin x and differentiate using product rule, u =sin 2 x , v =sin x , d u /d x =2sinxcosx, d v /d x =cos x where the product rule is u (d v /d x ) + v (d u /d x ). This gets 2sin ...
LR
Answered by Liam R. • Maths tutor
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