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Show the sum from n=0 to 200 of x^n given that x is not 1, is (1-x^201)/(1-x) hence find the sum of 1+2(1/2)+3(1/2)^2+...+200(1/2)^199

Let the first term of a geometric progression be 'A', define the geometric sum, which we will call 'S', of 'Ax^n' for each integer n to be the sum from n=0 to r of 'Ax^n'. Hence S=A+Ax+Ax^2+...+Ax^r. Conside...
JB
Answered by Jordan B. • Maths tutor
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Do you agree with abortion? What are the ethical issues here?

Start by acknowledging that this is a complex issue with two sides and lots of shades of grey. Then walk through both in a balanced way, showing an appreciated of the four pillars of ethics.Is it legal? Unde...
JL
2321 Views

How do i find 30% of 70?

To begin with we need to understand what a percentage is. It is simply a proportional that shows a number as parts of a hundred. So 30% is the same as saying 30/100 which can be simplified by dividing the nu...
KR
Answered by Kevin R. • Maths tutor
177308 Views

What is the difference between sentirse and sentir?

Both sentirse and sentir mean to feel, but aren't used interchangeably. Sentirse is used to describe how you feel, and is followed by and adjective (e.g. feliz, triste). Sentir is used to describe what you f...
EH
Answered by Eva H. • Spanish tutor
8974 Views

Name and explain three clauses where you might find the subjunctive

Purpose clauses - A purpose clause contains the word 'ut' followed by the subjunctive and is translated as 'in order that' or 'in order to' Result clauses - A result clause also contains the word 'ut' follow...
LR
Answered by Lucia R. • Latin tutor
2337 Views