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What is recursion and why is it useful?

Recursion is when a named block of code (a subroutine or function ) calls itself. We can use recursion to describe some algorithms in very few lines. For example, the following block of pseudocode will recur...
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Answered by John W. • Computing tutor
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Discuss either the social, biological or cognitive aetiologies of Major Depressive Disorder? Use relevant literature

Major depressive disorder is diagnosed b
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Answered by Grace N. • Psychology tutor
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When do past participles agree in French?

When a verb in French uses a form of 'être' as an auxiliary alongside its past participle, the past participle agrees with the subject of the verb in gender and number. There is no agreement if the auxiliary...
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Answered by Michael P. • French tutor
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Translate the following sentence into French: Recently I went to the cinema with my friends, however I would like to go to the city.

Récemment je suis allé(e) au/j'ai visité le cinéma avec mes ami(e)s/copains/copines/camarades, cependant/pourtant je voudrais aller en ville.
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Answered by Ailsa N. • French tutor
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1. factorise x^2 - 9 Level 6 KS3, 2. Rearrange a (q-c) = d to make q the subject

1.Here the first task in this is to be able to identify the form of this quadratic polynomiala^2 - b^2 This format is called the difference between two squares When you get told to factorise in this form? Yo...
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Answered by Devante O. • Maths tutor
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