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I don't understand integration by parts - can you explain it please?

(Apologies I don't have the relevant diagrams here so this reads longer than it actually is on paper) 1) First it's important to establish that the prior knowledge is there before explaining something more a...
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How can I find the correct list of solutions whilst solving a trigonometry equation?

If you are unsure of the number of solutions to an equation, it is always best to start with a diagram. By drawing a diagram then marking out the boundaries specified in the question, it is easy to visualise...
OC
Answered by Owen C. • Maths tutor
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Integrate the following by parts integral (lnx) dx

formula= fg-integral(f'g)So we have:xln(x)-x+C
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Express 4sinx-cos(pi/2 - x) as a single trignometric function

The cos(pi/2-x) is equivalent to sinx because the cosx graph is just the sinx graph but shifted to the left by a phase difference of pi/2 radians, and cos(pi/2 - x) is also shifting the cosx graph to the rig...
RD
Answered by Rabia D. • Maths tutor
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Write down the coordinates of the centre and the radius of the circle with equation x^2+y^2-4x-8y+11=0

The general equation for a circle is as follows:(x-a)^2+(y-b)^2=r^2where (a,b) are the coordinates of the centre of the circle and r is the radius of the circle.x^2+y^2-4x-8y+11=0In this case, group all x te...
MC
Answered by Megan C. • Maths tutor
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