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skills/julia-numerical/test_basic.jl

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+# Basic Julia numerical test
+using LinearAlgebra
+using Statistics
+
+println("Testing Julia Numerical Calculation Skill")
+println("==========================================\n")
+
+# Test 1: Basic arithmetic
+println("Test 1: Basic Arithmetic")
+result = 2 + 2 * 3
+println("2 + 2 * 3 = ", result)
+
+# Test 2: Vector operations
+println("\nTest 2: Vector Operations")
+v1 = [1, 2, 3]
+v2 = [4, 5, 6]
+dot_product = dot(v1, v2)
+println("dot([1,2,3], [4,5,6]) = ", dot_product)
+
+# Test 3: Matrix operations
+println("\nTest 3: Matrix Operations")
+A = [1 2; 3 4]
+println("Matrix A:")
+println(A)
+println("det(A) = ", det(A))
+
+# Test 4: Statistics
+println("\nTest 4: Statistics")
+data = [10, 20, 30, 40, 50]
+println("Data: ", data)
+println("mean = ", mean(data))
+println("std = ", std(data))
+
+println("\n✓ All basic tests passed!")