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Integrate by parts, identifying that dv/dx = 1, u = ln(x) and therefore v = x and du/dx = 1/x. Sub into the parts equation to find the answer to be xln(x) - x + c.

The sine rule is a very powerful tool used in mathematics to calculate unknown sides and angles of triangles when we only know some of the information.

For example if we have a triangle and we know...

I can't figure out this question to do with VAT. VAT is charged at 20%. A TV is for sale for £650 inc. VAT in Good Electronics and the same TV is for sale £495 exc. VAT in Wright's Electricals, where is i...

You say you are familiar with the product rule i.e. f(x)=u(x)v(x) f'(x)= u(x)v'(x)+v(x)u'(x) (Equation 1)

OK so why don't we try applying that here let's try splitting the function in this proble...

BIDMAS is used to determine the first step in solving this problem. The bracket on the right hand side is expanded first. 9x-4=7x+14. Now the x's and numbers must be moved to opposite sides of the equals ...