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The stationary points on a curve of the form y=f(x) are where dy/dx = 0. To find dy/dx, differentiate using the product rule: dy/dx = 7e^x(d/dx(cosx)) + cosx(d/dx(7e^x)) = -sinx(7e^x) + cosx(7e^x). Now se...

[use of board] So, Pythagoras' theorem states that a^2+b^2=c^2. Therefore, we need to mark the triangle with a, b &c. a and b do not matter, c must be the longest edge, that creates the diagonal. Put ...

To answer this question, let's suggest that the essay question is 'How is human nature shown to change throughout the novel?' The best way to structure an essay is using the PEAL method: Point, Evidence, ...

The case system in Russian can be quite daunting, especially because it is a very different structure to what we use in English. Memorizing each individual ending can take a long time and a lot of practic...

A volta is the "turning point" in a poem, a moment of dramatic shift in tone or theme of the poem. In a Shakespearean sonnet, it can be found anywhere in the second half of the poem, usually wit...