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Step 1 :

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(a)

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Conversion from rectangular coordinates to spherical coordinates :  

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The function is \"\".

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Substitute \"\" and \"\" in above equation. \"\"

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The equation in cylindrical coordinates is \"\".

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Step 2 :

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(b)  

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Conversion from rectangular coordinates to spherical coordinates :  

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The function is \"\".

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Substitute \"\" and \"\" in above equation. \"\"

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The equation in cylindrical coordinates is \"\".

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Solution :

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(a) The equation in spherical coordinates is \"\".

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(b) The equation in spherical coordinates is \"\".