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Expert: Robi Bhattacharjee - 9/28/2008


Question
PLEASE HELP!!!

How do you rewrite an expression as a power of a given number? e.g

16 to the power of -2 as a power of two???!!!  

Answer
Hi Ellie,

You would first write the number as a power, and then raise it to the other number. Check out this example.

16 = 2^4. You can just factor 16 and figure that out. 2^4^-2 = 2^(4*-2)
(this is an important step) and you get 2^-8.



I hope this helped,
Robi

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Robi Bhattacharjee

Expertise

I can answer a variety of questions on mathematics. Questions on trigonometry, calculus(preferably single variable), algebra, geometry, and number theory will be answered. I cannot answer questions on abstract branches of mathematics such as group theory. I also cannot answer questions on statistics. In number theory, I can answer questions on congruences, prime numbers, units, functions, and the riemann-zeta function.

Experience

I have studied advanced math my entire life. I started calculus in sixth grade. I have attended numerous math competitions and I am attending math organizations such as the San-Diego math circle. Also, this year I have been invited to the USAMO which is a prestigious math competition (Every year the USAMO invites 500 students from across the USA to participate in this competition. The top 6 go to represent the USA in the International Math Olympiad).

Organizations
I am in the San Diego Math Circle

Education/Credentials
I am entering high school and have received a perfect score and the STAR test 5 times in a row. I also have gotten recognitions in the AMC 10, AIME, Math Counts, and ARML. Additionally, I have won the San Diego Math Olimpiad twice in a row.

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