The first derivative of cosᵐ ψ with respect to ψ is

Lagos State University MAT102 2014 past question

1. -m cosᵐ⁻¹ ψ sin ψ
2. m cosᵐ⁻¹ ψ sinᵐ ψ
3. -m sinᵐ⁻¹ ψ cosᵐ ψ
4. m sinᵐ ψ

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