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Find x and y of these two equations: 2x - 3y = 13 and 3x + y = 3

In order to find the unknown variables x and y we need to simplify these equations in the way that will make it possible for us to get rid of either x or y variable, and make it easier to solve the remaining...
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Answered by Zuzana B. Maths tutor
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Why does ln(x) differentiate to 1/x ?

At first glance, this may seem quite complicated. However, it is simple once you make use of exponents. Let y=ln(x) . This can be written as: e y = e ln(x) e to the power of a natural log cancels out, which ...
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Answered by Charlie E. Maths tutor
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Differentiate ln(x)/x

To differentiate this, we use the quotient rule as we have 2 functions of x as a fraction. The quotient rule states that: where u is the numerator function and v is the denominator function. Therefore, u=ln ...
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Answered by Charlie E. Maths tutor
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Describe the passive movement through diffusion and explain Fick's Law

Diffusion is the net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration o...
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Answered by Zuzana B. Biology tutor
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What are the major parts of a neuron? What are the three types of nerve cells?

1) The nerve cell , also referred to as a neuron , has several parts that are important for its function in the nervous system. These parts are: Soma - or a nerve cell body, contains nucleus and other organe...
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