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How do I derive the indefinite integral of sine?

The integral of sine is pretty easy to remember as it is -cos + C. However you need to be able to prove this, without using the integral of cosine. This method uses sines exponential form.

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Answered by Lucile C. Maths tutor
2967 Views

How can I derive the energy of an electron using the electron in a box model?

The electron in a box model uses the idea that the energy of the electron and that of a standing wave in a box are analogous. So using your knowledge of standing waves you can derive an equation for th...

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Answered by Lucile C. Physics tutor
15681 Views

Explain what is meant by codominant alleles.

Codominant alleles are different to the dominant and recessive alleles studied by Mendel in his studies on pea plants. When codominant alleles are expressed together, aspects of both genes are expresse...

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Answered by Liam P. Biology tutor
16418 Views

Work out the ratio between the surface area of sphere of radius 6cm and the total surface area of a hemisphere of radius 9cm.

Here you need to use two formulae; one for the surface area of a sphere (4πr2) and one for the area of a circle (πr2).

First the surface area of the 6cm radius spher...

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Answered by Liam P. Maths tutor
14552 Views

Solve the quadratic equation: 5x2+8x+2

Here you need to use the quadratic formula, it cannot be solved by expanding out the brackets. In the formulae for which can be found on the formulae sheet. In this case a=5, b=8 and c=2.

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Answered by Liam P. Maths tutor
4912 Views

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