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What is the gradient of the curve y = 2x^3 at the point (2,2)?

Firstky differentiate to gain an equation for the gradient.Differentiating gives:dy/dx = 6x²Insert x = 2 into the above equation to find the gradient at that particular point of the curve.When ...

Answered by Emily R. • Maths tutor

8266 Views

Show that the curve y =f(x) has exactly two turning points, where f(x)= x^3 - 3x^2 - 24x - 28

This question is about turning points of a curve, these occur when the gradient of a line is zero. In its current form, the equation of the curve tells us nothing about the gradient of the curve; it must ...

Answered by Joshua A. • Maths tutor

5416 Views

Whats the effective resistance in a parallel and series circuit with a cell and two 12 ohms resistors ?

What do we know about parallel circuits- Total current is equal to sum of the current in the individual branches I_T = I₁

Answered by Suwanja S. • Physics tutor

3354 Views

Can you help me plan an essay with the title: 'Winston Churchill's Iron Curtain Speech started the Cold War'

Yes:The Nature of the Speech, language used.Stalin's ReactionTruman's support for Churchill (Iron Fist approach)No:Winston Churchill had little influence as a politicianTruman Doctrine more influential in...

Answered by Daniel H. • History tutor

2446 Views

With reference to his dramatic methods, explain how Shakespeare presents the relationship between King Lear and Cordelia in 'King Lear'.

Within 'King Lear', Shakespeare presents the bond between Lear and his daughter Cordelia both as one born out of familial duty, yet retaining elements of a deeper more emotional bond between father and da...

Answered by Tutor126867 D. • English tutor

3811 Views