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Discriminants and determining the number of real roots of a quadratic equation

What is a discriminant? A discriminant is a value calculated from a quadratic equation. It use it to ' discriminate' between the roots (or solutions) of a quadratic equation. A quadratic equation is one of t...
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Answered by Gus N. • Maths tutor
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What factors affect the speed at which an action potential travels?

There are several factors affecting the rate and speed of an action potential: 1. Myelin sheath - This covers some of the nodes and acts as an electrical insulator where the action potential travels from one...
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What is the difference between 'por' and 'para'?

Although both these words can mean 'for' in English, the variations of translations mean 'por' and 'para' have very distinct uses. Although confusing at first, it is very easy to learn when to use each corre...
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Answered by Kate P. • Spanish tutor
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What is the difference between mitosis and meiosis?

Mitosis is the cell division that produces 2 daughter cells with genetically identicle DNA to the parent cell. These are none as diploid cells. Meiosis requires two stages of cell division to produce 4 daugh...
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How do the endings change depening on the gender in Russian nouns?

In Russian nouns have three gender groups- masculine, feminine or neuter. Depending on the gender the endings of the nouns change. Knowing the gender is especially useful when it comes to learning cases and ...
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Answered by Anzela S. • Russian tutor
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