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Calculate the integral of ln(x)

Calculating the integral of ln(x) is harder than it might look and must be done using integration by parts, where the two parts are 1 and ln(x). The integration by parts formula is as follows integral{udv) =...
CR
Answered by Callum R. • Maths tutor
3748 Views

The perimeter of a right-angled triangle is 81 cm. The lengths of its sides are in the ratio 2 : 3 : 4. Work out the area of the triangle.

Answer is 243cm 2 . 2+3+4 = 981/9 = 9Non-hypotenuse sides of triangle are therefore length (9x2=18) and (9x3=27)Area of triangle is (18x27)/2 = 243
CA
Answered by Casey A. • Maths tutor
4057 Views

How do you solve algebraic equations?

The aim of solving an algebraic equation (such as x 2 =4(x-3) 2 ) is to find the values of x which make the equation correct. There are easy steps to follow for every question which can help you find the ans...
MB
Answered by Mercedes B. • Maths tutor
4177 Views

Solve the equation 6x^2 + 17x - 39 = 0

Using the quadratic equation with a = 6, b = 17 and c = -39, x is found to be 1.5 or -4.33
SE
Answered by Sian E. • Maths tutor
4711 Views

Given that y = 5x^4 + 3x^3 + 2x + 5, find dy/dx

We’re being asked to differentiate the function with respect to x. To do so, we use the general formula for differentiation, which is: ‘If y = kxn, dy/dx = nkx(n-1) We must also note that, which differentiat...
HP
Answered by Harry P. • Maths tutor
3883 Views