if f(X)=x^1/3+ 1/3x what is the value of f(27)

The way it is written, exponents are done first, so it is x^1, then over 3, that is, x/3.
On the 2nd part, I would assume 1/3x is better written as x/3.  It might be 1/(3x),
but rewriting it as x/3 makes it clear.

Given that, I assume this is f(x)=x^(1/3) + x/3.

It is known that 3*3*3=27, so 27^(1/3) = 3.
It is also known that 27/3 = 9.

Putting these two in gives 3 + 9 = 12, and that's the answer.


All Answers

Answers by Expert:

Ask Experts


Scott A Wilson


Any algebraic question you've got. That includes question that are linear, quadratic, exponential, etc.


I have solved story problems, linear equations, parabolic equations. I have also solved some 3rd order equations and equations with multiple variables.

Documents at Boeing in assistance on the manufacturiing floor.

MS at math OSU in mathematics at OSU, 1986. BS at OSU in mathematical sciences (math, statistics, computer science), 1984.

Awards and Honors
Both my BS and MS degrees were given with honors.

Past/Present Clients
Students in a wide variety of areas since the 80's; over 1,000 of them have been in algebra.

©2016 All rights reserved.