`intcot^4x dx` cot x dx

Explanation

`\int \cot ^{4} x d x=1 \int(\cot ^{2} x) d x `


`=\int({cosec}^{2}(x-1)^{2} d x. `


`\int({cosec}^{4} x-2 {cosec}^{2} x+1) d s `


`\int {cosec}^{4} x d x-2 \int {cosec}^{2} x d x+\int d x `


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