First term is given as -4

The subsequent terms in the sequence can be obtained by applying the formula 2*|x|*1/2 where x is the previous term.

If you notice carefully, you will see that

2 *|x| * 1/2 is nothing but

|x|So,

the first term is -4

Second term is |-4| = 4

Third term is |4| = 4

Fourth term is |4| = 4

and so on....

So, the sequence here is

-4, 4, 4, 4, ................. 4 (total 300 terms)

The first two terms cancel out with each other. (-4 + 4 = 0)

We are now left with 298 terms, and all the terms are equal to 4

Sum of these would be 298 * 4 = 1192

Hope this helps

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