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The iterated integrals use spherical coordinates. Describe the solids determined by the limits of integration.

∫π4Ï€2∫02π∫03cscθfÒÏ,θ,Ï•ÒÏ2sinÏ•dÒÏdθdÏ•

Short Answer

Expert verified

The region represents inside the downward opening right circular cone that has z-axis as its axis of symetry height 3 and radius 3

Step by step solution

01

Step 1:Given information

The given expression is∫π4Ï€2∫02π∫03cscθfÒÏ,θ,Ï•ÒÏ2sinÏ•dÒÏdθdÏ•

02

Step 2:Simplification

Given

∫π4Ï€2∫02π∫03cscθfÒÏ,θ,Ï•ÒÏ2sinÏ•dÒÏdθdÏ•

According to order of integration

ÒÏ=0toÒÏ=3cscθ

⇒x2+y2+z2=3cscθ

⇒x2+y2+z2=32csc2θ

This represents equation of right circular cone

And θvaries from θ=0toθ=2π

Also ϕvaries from ϕ=π4toϕ=π2

From these the region represents inside the downward opening right circular cone that has z-axis as its axis of symetry height 3 and radius 3

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