Express the unit vector ax in spherical components at the point: (a) r = 2, =
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Express the unit vector ax in spherical components at the point:
(a) r = 2, θ = 1 rad, ϕ = 0.8 rad;
(b) x = 3, y = 2, z = −1;
(c) ρ = 2.5, ϕ = 0.7 rad, z = 1.5.
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