Find an Equation in Cylindrical Coordinates for the Equation Given $z = 9 x ^ { 2 } + 9 y ^ { 2 } - 2$

question 14

Multiple Choice

Find an equation in cylindrical coordinates for the equation given in rectangular coordinates. $z = 9 x ^ { 2 } + 9 y ^ { 2 } - 2$

• A) \(z = 9 r + 2\)
• B) \(z = 9 r ^ { 2 } - 2\)
• C) \(z ^ { 2 } = 9 r - 2\)
• D)\(z = \frac { 9 } { 2 } r ^ { 2 } + 2\)
• E)\(z = \frac { 9 } { 2 } r ^ { 2 } - 2\)