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Differentiate, y = 2x^3 + 2/x + 3

Differentiate by multiply by the power and then minus 1 from the power. Use the rule: y= ax^b -> dy/dx = abx^(b-1) dy/dx = 3 x 2x^(3-1) + -1 x 2x^(-1-1) + 0 dy/dx = 6x^2 - 2x^-2
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Answered by Claudia H. • Maths tutor
4677 Views

What constitutes a perfect essay?

It is essential that you read the question properly. By this I mean do not just glance over it and start your essay, you really need to get to grips with what the question is asking you to do. One technique ...
JP
Answered by Joel P. • History tutor
2779 Views

Simplify Fully: (b^6 x b^2) / b^4

Using indices rules: y^a x y^b = y^(a+b), y^a / y^b = y^(a-b) Simplifying the numerator: b^6 x b^2 = b^(6+2) = b^8 Simplifying the whole fraction: b^8 / b^4 = b^(8-4) = b^4 Fully simplified answer is b^4.
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Answered by Claudia H. • Maths tutor
4810 Views

Jess wants to buy 30 mugs for her tea party. She can buy them at Shop A at £3.49 each or at Shop B as a pack of 30 at £58 plus VAT at 20%. She wants to get the cheapest option. Which shop should she buy from?

Shop A-> Total Price = 30 plants x £2.49 =£74.70 Shop B-> VAT = 20% = 0.2 VAT = 0.2 x £58 = £11.60 Total Price = £11.60 + £58 = £69.60 OR Total price = 1.2 x £58 = £69.60 Therefore Jess should buy from...
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Answered by Claudia H. • Maths tutor
3111 Views

Explain how a price ceiling imposed by governments in major rice-producing countries might affect world rice markets.

A price ceiling is when a maximum price is set on a good. For a price ceiling to be effective, it must be set below the free-market price. This causes excess demand (a shortage), which might cause people to ...
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Answered by Michael R. • Economics tutor
2654 Views