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Find dy/dx of y=x^2 + 2x+1

We differentiate each term individually with respect to x. the way we differentiate powers of x is: x^n goes to nx^(n-1). So x^2 would become 2x, 2x would be just 2 as x^0 is 1 and a constant would just disa...
VM
Answered by Vivek M. • Maths tutor
4517 Views

There are 150 men, women and children on a plane. For every 7 men there are 2 women, and for every 1 woman there are 3 children. How many men are on the plane?

This question involves ratios; men : women = 7:2; women : children = 1:3. We need to find a common number to combine the two ratios together. If we multiply the women:children ratio by 2, the ratio becomes 2...
NM
Answered by Noor M. • Maths tutor
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Positive aspects of being a sole trader and positive aspects of being in a partnership

(I have avoided including definitions of both and the negatives to save space) As a sole trader you are the only person of authority in the business. This means that all decisions made are by you, allowing f...
LB
1998 Views

Describe how an action potential is generated?

An action potential is an all or none response which has a threshold voltage which needs to be reached by the stimulus. A stimulus will call depolarisation of a nerve axon. This is caused on the entry of sod...
SN
Answered by Susmita N. • Biology tutor
3993 Views

The equation of the line L1 is y = 3x – 2 . The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel.

In order for two lines to be parallel, they need to have the same gradient (m). The gradient (m) is the coefficient of x in the line equation y=mx+c. Therefore, the gradient of L1 is 3 since 3 is the coeffic...
AK
Answered by Asimina K. • Maths tutor
4400 Views