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Question

Question: <img src="https://cdn.pureessence.tech/canvas_51.png?top_left_x=819&top_left_y=0&width=300&height=15...

dx equals -

A

2/35

B

3/35

C

4/35

D

None of these

Answer

2/35

Explanation

Solution

Put x = tan t, then

I = sec2 t dt =

= = 235\frac { 2 } { 35 }