Integrate 2016

Calculus Level 2

1 2016 2016 x 2016 d x \large \int_1^{2016} 2016 x^{2016} \, dx

If the integral above is equal to a b a c \dfrac{a^b - a}c , where a , b a,b and c c are positive integers, find a + b + c a+b+c .


The answer is 6051.

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Ashish Menon
May 18, 2016

1 2016 2016 x 2016 d x = 2016 × x 2016 + 1 2016 + 1 1 2016 = 2016 × 2016 2017 2017 2016 × 1 2016 2017 = 2016 2018 2016 2017 a + b + c = 2016 + 2017 + 2018 = 6051 \begin{aligned} \displaystyle \int_{1}^{2016} 2016x^{2016} dx & = 2016 × \dfrac{x^{2016 + 1}}{2016 + 1} \huge{\vert}_{1}^{2016}\\ \\ & = 2016 × \dfrac{{2016}^{2017}}{2017} - 2016 × \dfrac{1^{2016}}{2017}\\ \\ & = \dfrac{{2016}^{2018} - 2016}{2017}\\ \\ \therefore a + b + c & = 2016 + 2017 + 2018\\ & = \boxed{6051} \end{aligned}

Simple Standard Approach.

Rishabh Deep Singh - 5 years ago

Log in to reply

Simple standard comment.

Ashish Menon - 5 years ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...