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Integrate (x^2+4x+13)/((x+2)^2)(x-1) dx by using partial fractions

Express (x 2 +4x+13) / (x+2) 2 (x-1) as partial fractions. (x 2 +4x+13) / (x+2) 2 (x-1) = a/(x+2) +b/(x+2) 2 +c/(x-1) where a, b and c are constants to be found. Multiplying by the denominator, we get (x 2 +...
DW
Answered by Donny W. • Maths tutor
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How would I approach a source question?

Approaching source questions, whilst they may seem daunting, are reasonably straighforward. You use the simple PEA/PEE structure, whilst also taking into account the nature origin and purpose of the source. ...
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Answered by Charlotte N. • History tutor
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Explain how a change in a sequence of DNA bases could result in a non-functional enzyme

A mutation in the DNA sequence may lead to a different amino acid sequence may lead to a different amino acid being produced in the primary protein structure of the enzyme during translation. This may cause ...
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Answered by Yusuf A. • Biology tutor
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Describe how a Pacinian corpuscle produces a generator potential when stimulated.

The increased pressure caused by the stimulus opens pressure gated sodium ion channels allowing Na+ ions to diffuse (down a concentration gradient) into the axon. This sudden influx of Na+ ions causes a loca...
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Answered by Yusuf A. • Biology tutor
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Quels peuvent être les avantages de vivre à la campagne plutôt qu'en ville?

Une vie rurale est très différente d'une vie urbaine mais comporte tout de même un grand nombre d'avantages. En effet, vivre à la campagne permet de mener une vie plus calme et apaisante étant donné qu'il y ...
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Answered by Jack L. • French tutor
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