Evaluate
11x^{2}+8y^{2}+2z^{2}+6z
Differentiate w.r.t. x
22x
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11x^{2}+4y^{2}+6z+4y^{2}+2z^{2}
Combine 7x^{2} and 4x^{2} to get 11x^{2}.
11x^{2}+8y^{2}+6z+2z^{2}
Combine 4y^{2} and 4y^{2} to get 8y^{2}.
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