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Integrate cos(2x)

The intergral for cosx is sinx, but '2x' must be considered. When differentiating a sinx/cosx function, the '2x' would be differentiated separately and placed in the front (multipling). So when intergating y...
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Answered by Gold O. • Maths tutor
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The area of a rectangle is 8cm^2. The rectangle is (3x+1) by (2x+5). Find the value of x

Area of a rectangle is width times height (3x+1)(2x+5)= 6x 2 +15x+2x+5 6x 2 +17x+5 Set formula of area equal to known area value. 6x 2 +17x+5= 8 6x 2 +17x-3 = 0 (6x-1)(x+3)=0 (or use quadratic formula) x=-3 ...
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Answered by Conrad D. • Maths tutor
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How should you structure paragraphs in your essay?

A strong introductory paragraph is crucial but it does not need to be too long, save your words for the middle section. As well as this, a strong concluding paragraph that links all your points together is i...
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What is the best way to approach analysing a historical source?

Firstly it is important to cover the who, what, when and where of the source to gain a better understanding. Next, the content of the source should be picked apart to find the true point of it. This should h...
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Answered by Jessica V. • History tutor
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Find the inverse of the following function: g(x) = 4/(3-x)

A function is simply a process that takes in a number, does a few operations on it (for example, add, multiply etc), and then gives out another number. If you want to figure out the inverse of a function, al...
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Answered by Eytan M. • Maths tutor
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