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MATH 237 MIDTERM By: Niall W. MacGillivray. Outline. 1.1-1.2 Scalar Functions 2.1-2.2 Limit Theorems 2.3-2.4 Proving a Limit Does (Not) Exist 3.1-3.2 Continuity Theorems 3.3 Limits Revisited 4.1-4.2 Partial Derivatives 4.3-4.4 Linear Approximations 5.1 Differentiability.
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MATH 237 MIDTERM By: Niall W. MacGillivray
Outline 1.1-1.2 Scalar Functions 2.1-2.2 Limit Theorems 2.3-2.4 Proving a Limit Does (Not) Exist 3.1-3.2 Continuity Theorems 3.3 Limits Revisited 4.1-4.2 Partial Derivatives 4.3-4.4 Linear Approximations 5.1 Differentiability
Outline cont’d 5.2-5.3 Partial Derivatives, Continuous Functions, and Differentiable Functions 5.4 Linear Approximation Revisited 6.1 Basic Chain Rule 6.2 Extensions of the Chain Rule 7.1 Directional Derivatives 7.2-7.3 Gradient Vector Revisited 8.1 Taylor Polynomials 8.2 Taylor’s Theorem
1.1-1.2 Scalar Functions • Function: a “well-defined” rule • Domain: subset for which function is defined • Range: subset which is attained by function • Scalar Function: Domain is subset of n-space and range is subset of 1-space
1.1-1.2 Scalar Functions • Level curves: curves given by setting the function equal to a constant
1.1-1.2 Scalar Functions • Cross sections: curves given by setting one of the variables equal to a constant
2.1-2.2 Limit Theorems • Euclidean distance: “usual” distance in n-space
3.1-3.2 Continuity Theorems • Limit exists • f defined at a • The equality holds
4.1-4.2 Partial Derivatives • Careful about the order of subscripts
4.3-4.4 Linear Approximations • Recall in 1-D: The tangent line • Recall in 1-D: The linear approximation
4.3-4.4 Linear Approximations • Hint: Don’t expand terms
4.3-4.4 Linear Approximations • Calculator value: -1.034, error of 0.004
5.1 Differentiability • How good is this approximation?
5.2-5.3 Partials, Cts Fncs, and Diff Fncs • Recall in 1-D: Differentiability implies Continuity