Lv 13 points

# Arjun

• ### Greatest value of the acceleration?

A particle moves in a straight line so that, at time t s after passing a fixed point O, its velocity is v m/s,

where v = 6t + 4 cos 2t. Find the greatest value of the acceleration.

• ### Normal Distribution Question(Measurement of wind speed)?

Measurements of wind speed on a certain island were taken over a period of one year. A box-and-

whisker plot of the data is obtained where the LQ= 39 and UP=63. It is suggested that wind speed can be modelled approximately by a normal distribution with mean μ and standard deviation σ.

(i) Estimate the value of μ.

(ii) Estimate the value of σ.

The value of μ=(63+39)/2=51, but can someone help me how to find the σ?

• ### Triangle inequality theorem?

Give a real life example of the Triangle inequality theorem

• ### Question on subgroup?

If k is a subgroup of G', then (f inverse)(k) is a subgroup of G

• ### Greatest Common Divisor question?

prove that Greatest Common Divisor is unique

• ### Question on Subgroup?

Let G be a group and H is a subgroup of G. Show that the identity e an element of G is in H.

• ### Equivalence Relation question?

Let G be a group and H be a subgroup of G. We say that a is congruent to b modulo H if and only if a* (b inverse) is an element of H. Show that congruence modulo H is an equivalence relation on G.

• ### Average Weight question?

the average weight of pupils is 45 kg . 7 of them weight an average of 42 kg. what is the average weight of the remaining pupils?

• ### Permutation and combination?

A bag contains six white marbles and five red marbles. Find the number

of ways four marbles can be drawn from the bag if

(i) they can be any color.

(ii) two must be white and two red.

(iii) they must all be of the same color.

• ### NEWTON-RAPHSON METHOD?

Am starting a project related to NEWTON-RAPHSON METHOD but I want

a proper title for my project! Can someone suggest me a proper title for

my project??

• ### Complex Analysis question?

Prove |v+iw|^2 + |w+iv|^2 = 2[|v|^2 + |w|^2]

• ### permutation and combination question?

How many ways are there to distribute 40 identical marbles among 4 children without restriction

• ### Mathematics induction question?

Prove by mathematical induction that n < 2n for all positive integers n

• ### Combination question?

Find the number of selections of 4 letters of the word RESUME that contains:

(ii) exactly one E

(iii) both E’s

• ### Permutation question?

Find the number of 4 digit figures that can be formed using 4 digits which lie between 3500 and 6000 from the numbers 2; 3; 4; 5; 6; 7; 8; 9 without repetition.

• ### Combination question?

From a class of 8 boys and 12 girls, 10 students are to be chosen for a

competition, including 4 boys and 4 girls. 2 girls who won prizes last

year should be included. Find in how many ways the selection can be

• ### Bisection Method question?

How to perform a bisection method for (x-1)(x+10)???

• ### Bisection Method for quadratic?

! want to do a bisection method for the quadratic (x-1)(x+10)

but the problem is, what two possible numbers and its midpoint

should i used to make a start so that i can get a correct answer??