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Solution
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Solution provided by AtoZmath.com
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Two point Forward difference formula calculator for a table
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1. Using 2 point Forward difference, Backward difference, Central difference formula to find solution
| x | 1 | 1.05 | 1.10 | 1.15 | 1.20 | 1.25 | 1.30 | | f(x) | 1 | 1.02470 | 1.04881 | 1.07238 | 1.09545 | 1.11803 | 1.14018 |
`f^'(1.10) and f^('')(1.10)`
2. `f(x)=2x^3+x^2-4` and `h = 0.5`, estimate `f^'(2.5) and f^('')(2.5)` using 2 point Forward difference, Backward difference, Central difference formula numerical differentiation Also find exact value of f', f'' and error for each estimation
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Example1. Using Two point Forward difference, Backward difference, Central difference formula numerical differentiation to find solution
| x | 1 | 1.05 | 1.10 | 1.15 | 1.20 | 1.25 | 1.30 | | f(x) | 1 | 1.02470 | 1.04881 | 1.07238 | 1.09545 | 1.11803 | 1.14018 |
`f^'(1.10) and f^('')(1.10)`Solution:The value of table for `x` and `y` | x | 1 | 1.05 | 1.1 | 1.15 | 1.2 | 1.25 | 1.3 |
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| y | 1 | 1.0247 | 1.0488 | 1.0724 | 1.0954 | 1.118 | 1.1402 |
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Two-point FDF (Forward difference formula) `f^'(x)=(f(x+h)-f(x))/h` `f^'(1.10)=(f(1.10+0.05)-f(1.10))/0.05` `f^'(1.10)=(f(1.15)-f(1.10))/0.05` `f^'(1.10)=(1.0724-1.0488)/0.05` `f^'(1.10)=0.4714`
Two-point BDF (Backward difference formula) `f^'(x)=(f(x)-f(x-h))/h` `f^'(1.10)=(f(1.10)-f(1.10-0.05))/0.05` `f^'(1.10)=(f(1.10)-f(1.05))/0.05` `f^'(1.10)=(1.0488-1.0247)/0.05` `f^'(1.10)=0.4822`
Two-point CDF (Central difference formula) `f^'(x)=(f(x+h)-f(x-h))/(2h)` `f^'(1.10)=(f(1.10+0.05)-f(1.10-0.05))/(2*0.05)` `f^'(1.10)=(f(1.15)-f(1.05))/0.1` `f^'(1.10)=(1.0724-1.0247)/0.1` `f^'(1.10)=0.4768`
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