Find the tangent plane to the surface 
at the point 
on the surface.
Definitions:
Illegal
Illegal refers to actions or activities that are prohibited by law and subject to penalties.
Breach of Contract
Occurs when one party to a contractual agreement fails to fulfill their obligations under the contract, leading to possible legal action.
Concrete Mix
A combination of cement, water, sand, and aggregate (gravel or stone) that when cured, forms a robust and durable construction material.
Rectification
The legal process of correcting errors in a document to reflect accurately the intentions of the parties involved.
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