Evaluate the integrals. \int_{-5}^{5}\frac{w^{3}}{\sqrt{w^{50}+w^{20}+1}}dw

arenceabigns

arenceabigns

Answered question

2021-10-23

Evaluate the integrals.
55w3w50+w20+1dw

Answer & Explanation

Brittany Patton

Brittany Patton

Skilled2021-10-24Added 100 answers

Step 1
Given integral,
55w3w50+w20+1dw
Step 2
Using symmetry properties
If f is an odd function (f(-x)=-f(x)) then aaf(x)dx=0
f(w)=w3w50+w20+1
Now
f(w)=(w)3(w)50+(w)20+1
=w3w50+w20+1
=w3w50+w20+1
=-f(w)
Therefore f is an odd function,
So, 55w3w50+w20+1dw=0
Step 3
Final answer:
55w3w50+w20+1dw=0

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