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Integrate tan (x) with respect to x.

I = ∫ Tan (x) dx= ∫ (sin(x)) / (cos(x)) dx We see that this is close to the standard integral ∫ F'(x) / F(x) dx = Ln (F(x)) + C So first we must rewrite the Integral as: I = - ∫ (-sin(x)) / (cos(x)) dx (Taki...
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Answered by Matthew H. • Maths tutor
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Within the Justice system is the idea of "deterring" morally sound?

-Look at different religions and beliefs in regards to the question. Approach with table tennis style, (back and forwards argument). P- point E- evidence A-Analyse R- root
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What is the evidence for continental drift?

The Continental Drift theory proposed by Alfred Wegener suggested that the continents were not always in the position that they are in today. The main piece of evidence is the jigsaw fit of the continents su...
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Answered by Natasha C. • Geography tutor
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Aminoethane can be prepared by a reduction reaction. Identify a starting compound that can be used to prepare aminoethane by reduction, give the necessary reagent and write an equation for the reaction.

Amines can be prepared by reduction of Amides or Nitriles. To give Aminoethane (CH 3 CH 2 NH 2 ) we need an Amine or Nitrile with the same number of carbon atoms (2 in this case). This would be Acetamide (CH...
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Answered by Thomas N. • Chemistry tutor
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Find the tangent to y = x^2 - 4x + 9 at the point (3,15)

First find dy/dx: dy/dx = 4x - 4 And thus at (3,15): dy/dx = 12 - 4 = 8 = m (as m is the gradient of a curve) So using y - y 1 = m(x - x 1 ) where (x 1 ,y 1 ) = (3,15): y - 15 = 8(x - 3) y = 8x- 9
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Answered by Scott H. • Maths tutor
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