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Find dy/dx when y = 2ln(2e-x)

Answering this question requires knowledge of e and ln. If we look at the question we can see 2 is being multiplied by the ln, so we might want to use the product rule. Also, we can see that the ln has a big...
JL
Answered by Jay L. Maths tutor
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y = (x^3)/3 - 4x^2 + 12x find the stationary points of the curve and determine their nature.

first we find the first derivative of the function. Here dy/dx = x^2-8x+12. We set this to zero and factorise to obtain the roots of the function. Such that dy/dx = (x-6)(x-2)= 0. This gives the stationary p...
JM
Answered by Jordan M. Maths tutor
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Differentiate y = (3x^2 + 1)^2

Looking at this question the first thing we should notice is that there is a an x squared inside a bracket which is also squared. As there is function inside a function we must use the chain rule. The simple...
HB
Answered by Hannah B. Maths tutor
6081 Views

Integrate the following equation to find y: dy/dx = 3x^2 + 2x + 6

Notice that integration is simply the opposite of differentiation. So, if we just integrate this term-by-term then we can find an expression of y in terms of x. So, when we integrate dy/dx becomes y. Integra...
MM
Answered by Murray M. Maths tutor
12822 Views

Find the equation of the straight line that passes through the points (1,2) and (2,4)

Remember that the equation of a straight line (when given two points OR a point and a gradient) is y-y_1 = m(x-x_1) where m is the gradient and (x_1,y_1) is a point on the line. Since we have two points, we ...
MM
Answered by Murray M. Maths tutor
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