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Find stationary points of curve y = x^3+3x-2

y = x^3+3x-2dy/dx = 3x^2-2Stationary points when dy/dx = 00 = 3x^2-22 = 3x^2+-root2 = 3x+-root2/3 = x
CB
Answered by Charlie B. • Maths tutor
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Perimeter of isoceles triangle is 24cm. Sides 'x' = x + 3, side 'y' = x + 2, calculate the area

Area isosceles = h b/2 = h y/2Perimeter = 24x+3+x+3+x+2 = 243x + 8 = 243x = 16x = 16/3h^2 = (x+3)^2 - ((x+2)/2)^2h^2 = 56h = 2 root14area = 2root14*(x+2)/2area = 13.719 to 1dp
CB
Answered by Charlie B. • Maths tutor
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'The rebellions which occurred during the reigns of Edward VI and Mary I were mainly political in origin.' Assess the validity of this view.

A useful formula which I always use when writing any essay and has got me through GCSEs and degree-level essays:Students should first decide in their paragraphs what their answer to the question is going to ...
MT
Answered by Molly T. • History tutor
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What's the difference between the accusative and the dative case and when should I use them?

The accusative and dative are two of the four cases that are used in the German language. The accusative case is used to mark the direct object of a sentence (bold in the example below):The man eats the appl...
LJ
Answered by Lauren J. • German tutor
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How is the heart beat controlled?

The heart is composed of myogenic muscle and generates its own rate in normal condition. This rate can be modified during increased or decreased respiratory demand. The heart beat is initiated by a group of ...
TD
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