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Solve the quadratic inequality x^2+x-6>/= 0.

First equate the equation to zero and solve it. To solve the quadratic equation, find the multiples that make '-6' and within this which have a total sum of 1. By this method we can figure out the two bra...

Answered by Anannya M. • Maths tutor

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The formation of new species is known as speciation. Explain the difference between Allopatric and Sympatric speciation. [1 mark]

Both allopatric and sympatric speciation occurs due to reproductive isolation between populations of the same species. Allopatric speciation involves a physical barrier such as a river or mountain separat...

Answered by Jonathan D. • Biology tutor

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x/(2x-3) + 4/(x+1) =1 [5 mark question]

We have 2 fractions we want to get rid off to make it easier, so what we do is multiply both sides by the things we want to get rid off.In this case we multiply both sides by (2x-3)(x+1)This gives us x(x+...

Answered by Abdul Jalil A. • Maths tutor

4104 Views

What is the plus-que-parfait and when do you use it?

First of all, these more complex tenses are often very complicated and difficult so do not feel discouraged if you do not understand them initially, but once you do you will be using the plus question par...

Answered by Ella L. • French tutor

3759 Views

use the substitution u=2+ln(x) to show that int(e,1(ln(x)/x(2+ln(x)^2))dx)=p+ln(q) , where p and q are rational numbers.

So u=2+lnx, therefore du/dx=1/x , we can work out the new upper and new lower limit by substitute in e and 1 into 2+lnx , and we get 2+ln(e)=3 , 2+ln(1)=2Rearrange the differential we get dx=xdu , substit...

Answered by • Maths tutor

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