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The maximum/minimum of a function are the points where the first derivative (the gradient) of the function is zero.
So with a function of the form y=f(x), you must take the derivative (dy/dx) ...
If we have the 2 lines
line 1 - 3y=4x+2 and line 2 - 6y=7x+3
Firstly we would look for when the y's or x's are multiples of each other in this case the y's are multiples of each other ...
From the double angle formula for cosine, we know that cos(2x)=cos2(x)-sin2(x). Also, we know that sin2(x)+cos2(x)=1. So by substituting the second formula ...
(3* square root of 2) square= (3* square root of 2) * (3* square root of 2)
now lets remove the brackets
remember to multiply the number outside the square root; so gives us 33 =9...
The stationary point of a curve is where it changes direction, that is the gradient goes from pos...
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