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Will be easier to explain with whiteboard!a) Let y = arcsin x. sin y = x cos y dy/dx = 1 dy/dx = 1/(cos y) dy/dx = 1/(√ (1 - sin 2 y)) dy/dx = 1/(√( 1 - x 2 )) as required.b) 4 - 2x - x 2 = - (x 2 + 2x - 4) ...

What best explains the collapse of royal authority in France by 1789? Louis XVI was in theory an absolute monarch who ruled according to the Divine Right of Kings. However, by 1789 this theoretical power had...

The de Broglie wavelength is an important idea in physics that shows that all matter with mass can also show wave-like properties. For example, an electron (which we usually think of as a particle) can diffr...

There is a simple structure that is infallible. It starts with having a general structure, Introduction, Main body (with 3 main arguments), and Conclusion.The intro and conclusion have to be pre prepared, an...

Working through unseen poetry can be a really creative and thought-provoking process. I would advise the student to take a deep breath, shut out the context of the exam hall, and read the poem through slowly...