Top answers

A sequence is defined as: U(n+1) = 1/U(n) where U(1)=2/3. Find the sum from r=(1-100) for U(r)

U n+1 =1/U n where U 1 = 2/3First of all, we need to find U 2 and U 3 and so on, up until we notice a pattern in the answers. U 2 = 1/(2/3) = 3/2U 3 = 1/(3/2) = 2/3As we can see, U 1 and U 3 are equal, and s...
Answered by • Maths tutor
5575 Views

Why does the MC Curve cut the AVC curve at the AVC Curve’s lowest point?

When marginal costs start to rise, starting at point C, due to diminishing returns, the average variable cost is still decreasing, at point X. The average variable cost will continue to decrease as long as t...
CM
17577 Views

Outline the Strange Situation as a method of assessing attachment. Briefly explain two limitations to this method.

The strange situation is a method first used by Ainsworth to assess infant attachment. The infant and mother are observed in a controlled environment and they experience a series of 3-minute stages. The moth...
DW
Answered by Delia W. • Psychology tutor
4971 Views

Find the indefinite integral of f(x)=(1-x^2)/(1+x^2)

Int() in this case will refer to integralsAnswer is: f(x)=(1-x^2)/(1+x^2)=(2-(1+x^2)/(1+x^2)=-1+2/(1+x^2)=> Int(f(x))=Int(-1+2/(1+x^2))=Int(-1)+2Int(1/(1+x^2))=-x+2tan^-1(x)+C
Answered by • Maths tutor
3332 Views

Magnesium oxide contains magnesium ions (Mg2+) and oxide ions (O2–). Describe what happens when magnesium atoms react with oxygen atoms to produce magnesium oxide.

magnesium ions loses two electrons becoming Mgoxygen gains two electron becoming OThis now means both the atoms have a full shell
RD
Answered by Rabia D. • Chemistry tutor
10249 Views