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Why is the derivative of sin(x), cos(x)?

Find out what they know what the questions means, ie if they know what sinx and cosx are and then how much they understand about what derivatives are.I would explain from the point they're at, define everyth...
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Answered by Ryan A. • Maths tutor
3993 Views

What is the difference between female and male pronouns?

Female- ends in AMale- often ends in E or O There are however exceptions to this rule.
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Answered by Daria W. • Polish tutor
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f(x) = x^3 + 3x^2 + 5. Find (a) f ′′(x), (b) ∫f(x)dx.

(a) To find the second derivative of f(x) we must differentiate f twice.the first derivative of f is f'(x)= 3x^2 + 6xthe second derivative therefore is f''(x)= 6x +6 (b) The integral of f(x) with respect to ...
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Answered by Samraj C. • Maths tutor
8377 Views

Given an ordered array of integers "V" and a integer "Sum", write a function that would return "true" if it finds two numbers in V that add up to Sum, and "false" otherwise.

Because there is no unique solution to the problem the goal is to think different ways to approach an issue and ultimately opt for the best one in terms of complexity. There is an example of set of answers t...
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Answered by Fabio D. • Computing tutor
1820 Views

What is agility? How would you test this?

Agility is defined as 'the ability to move and change direction quickly. (at speed) whilst maintaining control.The Illinois agility test is used to measure agility. It involves the participant starting in a ...
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