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Given a circle with the equation y^2 + x^2 = 10, with a tangent that intersects at point P, where x=1, find the coordinates for the point at which the tangent meets the x axis (Q).

As the tangent meets the circle at P, when x =1, we can assume that the y value will be the same for this value of x. therefore we substitute x=1 into the equation of the cirlce. Rearranging the equation of ...
JP
Answered by Joseph P. • Maths tutor
5736 Views

How do I demonstrate the importance of something to a text?

Very often in an exam question you will be asked of discuss how important something is within a text, this could be a character or symbol, for example. (Sometimes characters can be symbols themselves). If as...
JF
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f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .

i) (5 x 4) -12 = 8 ii) 5(x + 1) - 12 5x + 5 -12 5x - 7
SM
Answered by Santiago M. • Maths tutor
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What is the wavelength of a wave?

First I would draw a graph showing a wave to support my explanation for what the wavelength means. The wavelength of a wave is the distance, in metres, from one point of the wave to the same point on the nex...
KW
Answered by Kimberley W. • Physics tutor
3253 Views

Differentiate y= 8x^2 +4x +5

dy/dx= (2 * 8)x (2-1) +4 = 16x + 4
JJ
Answered by Juevaneeta J. • Maths tutor
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