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So here we need to use the chain rule in order to differentiate the equation. To start you take the function inside the bracket x²+4x and differentiate it to Du/Dx= 2x + 4 this is known as u. d...

average speed=total distance/time taken ; distance=speed x timeFor the first part of her motion the distance she travelled, d₁=40 x 1/2 (as 30 minutes represent half an hour), so d₁=...

The “The Wizard of Oz” has had a large influence on fashion, both in design and in photos. Just look at Vogue’s December 2005 photo shoot taken by famed photographer, Annie Leibovitz. It features actress ...

Our object will have a combination of potential energy (due to it's position relative to the ground) and kinetic energy (due to it's velocity).Consider the potential energy first. It depends on the height...

Throughout the novel, George Eliot presents Eppie as innocent, angelic and perfect. Description of her as 'golden' reflects how precious she is due to the value of gold both now and in the nineteenth cent...