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How do I work out the equation of a tangent line to a curve?

A tangent line to a point of a curve is the straight line which is parallel to the the curve at that point.The equation of any straight line has equation form : y-y_1 = m(x-x_1) where m is the gradient of...

Answered by • Maths tutor

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Under what circumstances is the present or imperfect subjunctive used?

Present subjunctive is used when the subjunctive setup is in present or future tenses. For example "Quiero que me hagas un favor" or "Va a ser necesario que me hagas...

Answered by Angus G. • Spanish tutor

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Applying material from Item A and your own knowledge, evaluate the usefulness of subcultural approaches in understanding crime and deviance (30 marks)

Understanding why crime and deviance has occurred and continues to do so has been a topic debated often with sociologists at the forefront. There are various different views as to why this is the case inc...

Answered by • Sociology tutor

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Simplify fully (3x^2-8x-3)/(2x^2-6x)

Simply factorise both expressions and cancel out the common denominator until left with a fully simplified fraction.the top expression becomes (3x+1)(x-3) and the bottom becomes 2x(x-3). Therefore, (x-3) ...

Answered by Sydney T. • Maths tutor

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8 What is likely to happen when the rate of interest increases? A) consumer spending increases B) firms buy fewer machines C) people hold more cash D) savers earn lower rewards

Answer:B)not A) because: higher interest = more expensive to borrow thus they hold less money and have less to spendnot C) because higher interest = more expensive to borrow thus they do not hold more cas...

Answered by • Economics tutor

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