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How do you form the present subjunctive in Spanish and what is it used for?

Use the 'yo' form of the present indicative and drop 'o' ending and add these endings:-ar verbs: e,es, e, emos, éis, en-er and -irverbs: a, as, a, amos, áis, anThe uses can be summarised in the acronym WEIRD...
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Answered by Ria C. • Spanish tutor
2361 Views

Solve the simultaneous equations y+4x+1 = 0 and y^2+5x^2+2x = 0

x = -1/3 and y = 1/3 or x = -1/7 and y = -3/7
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Answered by Mustafa Q. • Maths tutor
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What is a Pacinian corpuscle and how does it work?

The Pacinian corpuscle is a mechanoreceptor, which means it is a sensory receptor that responds to touch, pressure or vibration. Pacinian corpuscles are found deep in the skin, and respond to both pressure a...
Answered by • Biology tutor
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Prove that 1 + tan^2 x = sec^2 x

We know that tan x = sin x/cos x and so tan 2 x = sin 2 x/cos 2 x. We also know that sin 2 x + cos 2 x = 1 because this is a Pythagorean identity. We can rewrite the left hand side as (cos 2 x + sin 2 x)/cos...
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Answered by Eleanor F. • Maths tutor
26529 Views

Integrate 2x^2 + 4

When we integrate, we raise the power by one and divide the term by the new power. So let's break the question down term by term. When integrating 2x 2 we raise the power by 1 to get 2x 3 . We then divide 2x...
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Answered by Eleanor F. • Maths tutor
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