Question: How to prove the first question has 3 roots and how to do the second part with out using the L hospital rule ? Please

How to prove the first question has 3 roots and how to do the second part with out using the L hospital rule ? Please help! Thanks a lot

rove that the equation 3 -9x - 1 = 0 as exactly three real roots. valuate the following limit. (L'Hopital's Rule is not allowed). tan 3.x - sin 3x lim

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