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    How do you find this please. We have not done differentiation yet but we need to work out the maximum and minimum points, however the textbook doesn´t mention them...
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    You can find maximum/minimum points of some functions without differentiation. If it's a quadratic function, you can complete the square, and then find it from there - the minimum point of y=(x-1)^2 will be when x=1, as then y=0^2=0, whereas all other values of x would give y > 0.
    They often have exam questions where one part will be completing the square, and then the next will be finding a maximum/minumum point of the function.
 
 
 
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