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The solution to simultaneous equations is where the values of x and y satisfy both equations. In this case, we need to find values of x and y that satisfy the equations x2 + y2 =25 a...
Maths is pretty straight forward, you just need to get the key information out the question.So, we have a washing machine that costs £500 on sale. It has been reduced by 20%, so we need to find the origin...
f(x) is an increasing function when its gradient is positive. To find the the gradient of the the function we must differentiate it:d/dx f(x) = 3x2 - 9. To differentiate we multiply the exponen...
(Binomial)P(G=3) : (10C3)(3/7)3(4/7)7
I like to think of gf(-5) as g ( f(-5) ), which helps visualise the order in which you need to calculate the output for each function. First you need to find the answer for f(-5), which you then use as t...
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