Unformatted text preview: and concave downward. Type your explanation in text regions. • Graph the function, its ﬁrst derivative, and second derivative in the same plot. Explain the relationship between the signs of its derivatives and concavities of its graph. (2) Matrix Calculation Deﬁne the matrix A = 32 41 2 1 58 22 • Find determinant of A by type  A , notice when you type  you will get   and in enter A . • Find inverse of A . • Find the solution of the following system of equation 3 x 12 x 2 + 4 x 3 = 1x 1 + 2 x 2 + x 3 = 3 5 x 18 x 2 + 22 x 3 = 11 by computing A1 b where b = 1 3 20 Solve the same system of equations by [] Enter keyword Given ,...
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 Spring '08
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 Math, Differential Equations, Equations, Derivative, input df, deﬁne df

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