Trigonometric integration question

turutk
Messages
15
Reaction score
0

Homework Statement



\int sin^2x cos^4x dx

Homework Equations





The Attempt at a Solution



tried:
sin2x formula
writing 1-cos^2 instead of sin^2x
letting u=sinx
letting u=cosx

no luck yet
 
Physics news on Phys.org
lurflurf said:
recall that
[sin(x)]^2[cos(x)]^4=(2+cos(2x)-2cos(4x)-cos(6x))/32
or recall that
[sin(x)]^2[cos(x)]^4=(A+B cos(2x)+C cos(4x)+D cos(6x))/32
for some numbers A,B,C,D and deduce such numbers
or integrate by parts
or make us of trigonometric reduction formula

thank you for your answer. this question seems to be too long but i managed to solve it.
 
Thread 'Use greedy vertex coloring algorithm to prove the upper bound of χ'
Hi! I am struggling with the exercise I mentioned under "Homework statement". The exercise is about a specific "greedy vertex coloring algorithm". One definition (which matches what my book uses) can be found here: https://people.cs.uchicago.edu/~laci/HANDOUTS/greedycoloring.pdf Here is also a screenshot of the relevant parts of the linked PDF, i.e. the def. of the algorithm: Sadly I don't have much to show as far as a solution attempt goes, as I am stuck on how to proceed. I thought...
Back
Top