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How is the perfect tense formed?

The perfect tense is formed from : The auxiliary verb haber + the past participle of the verb , either ending in -ADO(-ar verbs) or -IDO(-er and -ir verbs) He hablado, He comido, He vivido. Example : COMER H...
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Answered by Rachelle O. • Spanish tutor
4339 Views

What is the name of the first stage of respiration?

Glycolysis. This is an anaeorbic process whereby glucose is converted to pyruvate via triose phosphate. This process gives out a total of 4 ATP molecules but requires 2 ATP molecules to convert glucose to tr...
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Answered by Adam S. • Biology tutor
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How do I know when to use être or avoir as an auxiliary verb?

An auxiliary verb is the first verb used in a compound tense (when more than one verb is present) such as le passé composé. Most French verbs take the auxiliary verb avoir - J' ai regardé la télé . However, ...
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Answered by Charlotte S. • French tutor
9474 Views

How do I integrate log(x) or ln(x)?

The integral of log(x) is not necessarily straight-forward. Though we can use the fact that d/dx(log(x)) = 1/x to help us. Rather than simply trying to integrate log(x), we can use integration by parts on 1 ...
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Answered by Daniel F. • Maths tutor
17148 Views

How do I integrate cos^2(x)?

The key to solving any integral of this form is to use the cosine rule: cos(2x) = cos 2 (x) - sin 2 (x) = 2 cos 2 (x) - 1 = 1 - 2 sin 2 (x) All of these forms are really helpful when solving problems such as...
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Answered by Daniel F. • Maths tutor
41171 Views