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Curve D has equation 3x^2+2xy-2y^2+4=0 Find the equation of the tangent at point (2,4) and give your answer in the form ax+by+c=0, were a,b and c are integers.

Differentiate the equationdy/dx=6x+2x(dy/dx)+2y-4y(dy/dx)Set this equal to zero and solve for dy/dx which gives:dy/dx=(2y+6x)/(4y-2x)For x=2 and y=4 dy/dx=5/3(y-y o )=m(x-x o )y-4=(5/3)(x-2)Thus, the equatio...
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Answered by Vasileios D. • Maths tutor
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Integrate 3x^2 + 4/3 x^5 with respect to x

3x 3 /3 + 4x 6 /(6x3) = x 3 + 2x 6 /9 + c
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Answered by Ellis B. • Maths tutor
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State Newton's Law of Gravitation

The gravitational force between two masses is directly proportional to the product of the two masses and inversely proportional to the square of the distance between them.
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Answered by Ellis B. • Physics tutor
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Describe what is meant by the double circulation system of the heart.

The double circulatory system refers to the heart having two, connected, closed circuits. The first goes from the right ventricle of the heart to the lungs and back to heart via the left atrium. The second p...
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Answered by Ibrahim M. • Biology tutor
9705 Views

Describe the process of semi-conservative replication.

DNA is a double-stranded molecule with a base unit on each side held together by hydrogen bonds. A binds to T and C binds to G. DNA polymerase facilitates the localised breaking of these hydrogen bonds. Free...
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Answered by Nick S. • Biology tutor
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