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Calculate the indefinite integral of ln(x)?

This would be calculated using the integration by parts method: NOTE: You can consider the function ln(x) to be a constant of value 1 multiplied by ln(x). The question would then become: Calculate the indefi...
UO
Answered by Uwais O. • Maths tutor
5202 Views

How do you form the perfect tense in the subjunctive mood and when is it used?

The subjunctive perfect form of a verb is derived in the same way as the indicative perfect form with the auxiliary ( être / avoir ) and the past participle of the main verb, except the auxiliary verb is con...
KM
Answered by Kathryn M. • French tutor
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Jo wants to work out the solutions of x^2 + 3x – 5 = 0 She says, ‘‘The solutions cannot be worked out because x^2 + 3x – 5 does not factorise to (x + a)(x + b) where a and b are integers.’’ Is Jo correct?

She is not correct. We can solve a quadratic equation in other ways. The easiest way is to use the formula for quadratic equations.x = (-b +/- sq. root (b^2 - 4ac) / 2ax = -3 +/- sq. root 3^2 - 4x -5 / 2 x 1...
KA
Answered by Kirsty A. • Maths tutor
4707 Views

The range of a set of numbers is 15 1/4. The smallest number is –2 7/8. Work out the largest number.

First we need to understand what the range is. It is the difference between the smallest and largest numbers in a sample or list or numbers. If we add the range on to the smallest number we get the largest n...
KA
Answered by Kirsty A. • Maths tutor
11909 Views

What is excess supply?

Excess supply is a form of allocative inefficiency where the supply of a good or service becomes greater than the demand for this good or service in the market. This often happens because the price for a goo...
CB
Answered by Chenab B. • Economics tutor
3293 Views