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Exam stress happens to everyone. Once you turn the exam paper and see the question, you can't help but panic. Your thoughts begin unfolding rapidly, you make a simple mind map, and in a few minutes time y...

we have dy/dx = -x/y , so we treat the differentials as fractions and write y dy = -x dx. Now integrating the left side with respect to y and the right side with respect to x, we have y²/2 = -x...

Here, we must consider Newton's Law of Universal Gravitation. This states that the gravitational force acting between two bodies is proportional to the masses of each body and inversely proportional to th...

When you differentiate a function which has only one parameter, like f(x), you are finding a new function, f'(x), which gives the gradient of your original function at every point. You'll probably remembe...

In history, teachers and examiners are always looking for people to know arguments and more importantly how to argue them effectively. Each topic in history has more than one viewpoint and it is up to you...