[Solved] Find the linear approximation to the function \(f ( x , y ) = 2 x ^ { 2 } + y ^ { 2 }\) at \(( 1,1 )\) and use it to approximate \(f ( 1.1,1.1 )\) . OD Efforts: Initiatives taken as part of Organization Development, aimed at improving organizational effectiveness, health, and capacity through planned interventions. Blue-Collar Workers: Employees who perform manual labor or work in production, manufacturing, and maintenance sectors, typically requiring physical work. Supervisors: Individuals who oversee the work of others, often with authority to hire, fire, and make decisions related to employee performance. OD Strategy: Organizational Development Strategy involves a planned, organization-wide effort to increase an organization's effectiveness and viability.