Question
Find d²y/dx², if y=tan²x+3 tanx
Options :
sec²x tanx (2 tanx+secx+3)
2 sec²x tanx (2 tanx-secx+3)
2 sec²x tanx (2 tanx+secx+3)
2 sec2²x tanx (2 tanx+secx-3)
Answer :
2 sec²x tanx (2 tanx+secx+3)
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