Differentiate sin²(x² + 1).

Lagos State University MAT102 2025 past question

1. 4x cos²(x² + 1)
2. 2 cos(x² + 1)
3. 4x sin(x² + 1) cos(x² + 1)
4. 2x sin²(x² + 1) cos(x² + 1) + 2x

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