MTH100 GDB Solution & Discussion Last Date:13-12-2016

[+ M.Tariq Malik]

MTH100 GDB Solution & Discussion Last Date:13-12-2016

Question:

Find the sum of the geometric series   to 7th term by using formula for finding sum of geometric series.

Note:

If you successfully able to find the common ratio, then 25% marks will be awarded.

If you will write the correct formula for finding sum, then you will be awarded 50% marks.

Inserting correct values in formula, will give you 75% marks.

Find the correct sum will give you 100% marks.

Instructions:

• The purpose of this GDB is to assess your knowledge and computational skills.
• Produce you own work. Copying the text from any other student or from any website is strictly prohibited. You will get zero marks in this case.
• You can write the mathematical equations/symbols in Math Type software and paste it in GDB. For the procedure click here  and you can also follow this Tutorial.
• Last date of this GDB is Dec 13, 2016. There will not any relaxation after due date. You have ample days to complete this task. Submit your answers at the earliest to avoid losing your marks.

[+ M.Tariq Malik]

Please Discuss here about this GDB.Thanks

Our main purpose here discussion not just Solution

We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions. Read More>>

 

Note:-

For Important Helping Material related to this subject (Solved MCQs, Short Notes, Solved past Papers, E-Books, FAQ,Short Questions Answers & more). You must view all the featured Discussion in this subject group.

For how you can view all the Featured discussions click on the Back to Subject Name Discussions link below the title of this Discussion & then under featured Discussion corner click on the view all link.

Or visit this link 

Click Here For Detail.

&

.•°How to Download past papers from study groups°•. 

[Sonia Ashar]

commo

[Guriya Niazi]

Series will be 1-2+4-8+16-32+64
Sum will be 43.

[+@ree$h@]

common ratio is -1/2

[+ M.Tariq Malik]

required in GDB 

1...common ratio 
2...using formula 
3...and answer of  sum  is 


series 
7 numbers of series will be                     
a1,a2,a3,a4,a5,a6,a7
1-2+4-8+16-32+64
Sum of 7 numbers =  43

r means the value that is multiplied with old number to make a new number 

like        1st number  = 1 * -2   =-2 (2nd number)
             2nd numebr = -2  * -2   =4 (3rd number 
              3rd number  = 4 * -2  = -8 (4th number )
i mean to say that 2 is the value that is producing new series number so r= -2 

a7= a1(r)^n-1 
a7= 1 (-2)^7-1
a7 = 2^6
a7 = 64 

to find 6th value using formula , apply this formula again 

common ratio sab mai same hotii hai  as proved below 
common ratio = -2 (if i m nt wrng)

example  = 
common ratio =  a2/a1   = -2/1   = -2 
                     =  a3/a2   = 4/-2   = -2 
                     = a4/a3    = -8/4   = -2 

[+ M.Tariq Malik]

From the question:

            a1 = 1

            a2 = -2

            a3 = 4

            n = 7

            Now

            Common ratio = r

            r = a2/a1 = a3/a2

            r = -2/1 = 4/-2 =-2

            r = -2

            Now sum = Sn

            Sn = a1 (1-r^n) / 1-r

            S7 = 1(1-(1-(-2^7)) / 1-(-2)

            S7 = 1+128 / 1+2

            S7 = 129 / 3

            S7 = 43

[+ M.Tariq Malik]

MTH100 GDB Solution