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A Scalar quantity has magnitude, but not direction. For example Speed is a scalar quantity.A Vector quantity has both direction and magnitude. For exampl...
First of all you need to work out the total number of pens. 7+4+6=17. How many of these 17 pens are blue? 7. If you pick one pen out of the 17, 7 of them would be blue. To work out the probability, you n...
Notes: At the minimum point of the curve, the gradient is = 0. You can find the gradient of a curve by taking the derivative of a point in the curve. We also know that when the curve is at a minimum, ...
This is the kind of question a student could be asked as part of their speaking exam. The most important thing in this exam is to keep talking, which is why I start by asking the students if they have phr...
The minimum point for the curve can be found by finding the point at which the gradient is zero, where the curve is instantaneously level, before increasing again. This can be done by differentiating the ...
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