find x? dx x² + 1 16x dx 8x? + 2 1. 2. dx cos² x tan x 3. (sec x – tan x)² dx 4. T7/4 dx dx 5. V1 – x² 6. Vx 2ln z dz 16z -cot z dz sin? z 7. 8. dz 8 dx 9. 10. e + e¯? x² 2x + 2 4x2 4 dx dx 2х + 3 11. 12. 1 + (2x + 1)² dt csc t sin 3t dt 13. 14. sec t 1 + sin 0 do d0 15. 16. cos? 0 V 20 – 0²

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