Suppose a e R', fis a twice-differentiable real function on (a, ), and Mo, M1, M2 are the least upper bounds of |f(x)|, \f'(x)|, |f"(x)|, respectively, on (a, 0). Prove that M{ <4M, M2. Hint: If h >0, Taylor's theorem shows that f'(x) 2h [f(x+ 2h) – f(x)1– hf "() | for some g e (x, x + 2h). Hence Mo |f'(x)| SHM2 + h
Suppose a e R', fis a twice-differentiable real function on (a, ), and Mo, M1, M2 are the least upper bounds of |f(x)|, \f'(x)|, |f"(x)|, respectively, on (a, 0). Prove that M{ <4M, M2. Hint: If h >0, Taylor's theorem shows that f'(x) 2h [f(x+ 2h) – f(x)1– hf "() | for some g e (x, x + 2h). Hence Mo |f'(x)| SHM2 + h
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
Problem 30EQ
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