[Solved] Find the error in this MATLAB code snippet for forward difference:f = @(x) log(x); x = 2; h = 0.001; df = (f(x+h) - f(x)) * h; | MATLAB

MATLAB - Numerical Methods

Find the error in this MATLAB code snippet for forward difference:

f = @(x) log(x);
x = 2;
h = 0.001;
df = (f(x+h) - f(x)) * h;

AUsing log instead of ln

BMultiplying by h instead of dividing by h

Cx should be a vector

Dh should be larger for accuracy

Step-by-Step Solution

Solution:

Step 1: Check forward difference formula
Forward difference is (f(x+h) - f(x)) / h, not multiplied by h.
Step 2: Identify the error in code
Code multiplies by h, which is incorrect and will give wrong derivative value.
Final Answer:
Multiplying by h instead of dividing by h -> Option B
Quick Check:
Forward difference divides by h [OK]

Quick Trick: Divide difference by h, don't multiply [OK]

Common Mistakes:

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