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How do you distinguish a normal statement from a question?

As you know, the English language has rules that allow you to identify a question without too many problems: order of the words (auxiliary verb + subject + verb + ...) and/or presence of elements such as Whe...
RB
Answered by Renee B. • Italian tutor
3740 Views

How do you simplify expressions involving different powers?

Let's answer the question by solving an example: Take (8x 2 * 5x 4 * 2y 3 )/(20x 3 ). Firstly, let's take a look at the first bracket and rearrange it so we have both numbers and variables grouped together: ...
PW
Answered by Patryk W. • Maths tutor
4147 Views

Given y=x^3-x^2+6x-1, use diffferentiation to find the gradient of the normal at (1,5).

dy/dx = 3x^2-2x+6 At (1,5), dy/dx = 7. 7 is the gradient of the tangent, therefore the gradient of the normal at (1,5) is -1/7.
KR
3103 Views

What is the present subjunctive and when is it used?

The subjunctive is a ' mood ', not to be confused with ' tense ' since a mood can have more than one tense. The present form of the subjunctive is the most common in French today; there is also an imperfect ...
TJ
Answered by Tabitha J. • French tutor
5256 Views

How can you tell the difference between a right-handed and left-handed coil (or helix) by looking at it?

Portions of proteins can arrange in regularly repeating structures such as α-helices: the vast majority of these helices are right-handed (the left-handed versions are very rare). Similarly, DNA (double) hel...
RS
Answered by Riccardo S. • Science tutor
28912 Views