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How do I know which trigonometric identity to use in any given situation?

For the most part, this comes down to practice. The insight in seeing which identity gives you the most efficient path to the solution comes with experience, however a little trick I like to use (silly as it...
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Answered by Ankush T. • Maths tutor
4218 Views

Find values of y such that: log2(11y–3)–log2(3) –2log2(y) = 1

NB.: Treat all log as log2 for purpose of formatting log(x) - log(z) = log(x/z) alog(b) = log(b^a) log((11y - 3)/3) - log(y^2) = 1 log((11y - 3)/3y^2) = 1 11y - 3 / 3y^2 = 2^1 11y - 3 = 6y^2 6y^2 - 11y + 3 =...
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Answered by Shrinivas A. • Maths tutor
6294 Views

Describe the events that take place at the synapse that enable transmission of a nerve impulse.

An action potential arrives at the synapse, triggering Ca2+ channels to open. This in turn triggers vesicles holding neurotransmitter to fuse with the presynaptic membrane, releasing the neurotransmitter int...
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Answered by Shrinivas A. • Biology tutor
20307 Views

State and explain the effect of the following on the rate of a reaction: a) increasing temp b) increasing pressure c) increasing concentration of ONE reactant d) adding a catalyst. In each case state what will happen to the rate constant, k.

a) will increase greater collision energy so greater chance of activation energy being exceeded so greater fraction of successful collisions k increases b) will increase more particles per unit volume so col...
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Answered by Joseph P. • Chemistry tutor
5034 Views

How do I know whether or not I should use the subjunctive mood after "que"?

The subjunctive mood is by definition a way of speaking that shows the speaker's personal attitude towards what they're saying. I'm sure that the textbook you're using explains all the basic situations when ...
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Answered by Jakub M. • French tutor
3131 Views