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Maths
A Level

How do you integrate the natural logarithm ln(x)?

To integrate this function, we must first recognise that ln(x) can be treated as 1 multiplied by ln(x). Using this knowledge, we can apply the 'integration by parts method' to integrate the function.Formu...

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Answered by Andrew A. Maths tutor
3328 Views

Differentiate y=(x-1)^4 with respect to x.

Using the chain rule, differentiate the "outside function" and the "inside function", and multiply the two results to get:dy/dx = 4(x-1)^3 * 1 = 4(x-1)^3

SH
Answered by Samuel H. Maths tutor
4841 Views

Find dy/dx in terms of t for the curve given by the parametric equations x = tan(t) , y = sec(t) for -pi/2<t<pi/2.

We know that dy/dx = (dy/dt) * (dt/dx). Differentiating each of the equations with respect to t gives. dy/dt = sec(t) tan(t) and dx/dt = sec2(t). Since dt/dx = 1 / (dx/dt) we have that dt...

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Answered by Oliver C. Maths tutor
6155 Views

7x+5y-3z =16, 3x-5y+2z=-8, 5x+3y-7z=0. Solve for x,y and z.

There are three methods to solve these types of silmultaneous equation questions, substitutution, elimination and matrices. In this example we use substitution and elimination.Elimination example.Eq1). 7x...

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Answered by Holly May B. Maths tutor
8815 Views

The line PQ is the diameter of a circle, where points P and Q have the coordinates (4,7) and (-8,3) respectively. Find the equation of the circle.

Start by using the formula d = sqrt((x2-x1)2+(y2-y1)2)Therefore, substituting in our coordinates from P and Q:Length PQ = sqrt((-8-4)...

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Answered by Matt C. Maths tutor
10057 Views

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