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Show that the integral of tan(x) is ln|sec(x)| + C where C is a constant.

First, recall that tan(x) can be rewritten in terms of sine and cosine. tan(x) = sin(x)/cos(x) The rephrasing of our question suggests that we should try the substitution rule of integration. We should subst...
AS
Answered by Anja S. • Maths tutor
210152 Views

What else is the definite article (le/la/les) used for in French?

In most instances where English uses the definite article, French does too. However, it has some special uses in French, which I shall explain below. 1) Must be used with all abstract nouns (nouns referring ...
JH
Answered by James H. • French tutor
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How are blood glucose levels controlled in the body?

Blood glucose is controlled by a negative feedback mechanism. When blood glucose levels rise, this is detected by beta cells in the Islets of Langerhans in the pancreas. In response, they secrete insulin whi...
EK
Answered by Emily K. • Biology tutor
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What is the difference between a gene, a chromosome and DNA?

Genes, chromosomes and DNA are three vital components of cells and many students often confuse them with each other. DNA stands for Deoxyribose Nucleic Acid. DNA molecules contain the genetic code which is m...
EH
Answered by Emily H. • Biology tutor
29040 Views

What is the difference between the biological and behavioural psychological approaches?

The biological and behavioural views of psychology allow for two different approaches to studying the subject and often link to the nature-nurture debate. The biological psychological approach is linked with...
EH
Answered by Emily H. • Psychology tutor
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