ef... at. Let f(x) = tan 2x. Which of the following is/are correct? %3D A. The fourth approximation of sec 2x about z = O is p4(x) = 1+4x? 3 64 OB. The fourth approximation of f(x) about a + 8(z - * +...

Let f(x) =tan2x. Which of the following is correct

Extracted text: ef... at. Let f(x) = tan 2x. Which of the following is/are correct? %3D A. The fourth approximation of sec 2x about z = O is p4(x) = 1+4x? 3 64 OB. The fourth approximation of f(x) about a + 8(z - * + (- - + - * is p:(2) = 1 + 4(x – )+8(x 8. 128 (x – ) 3 60 8 f(n)(0) 3 8. C. tan x = n! (x –-)" expanded about 8. 8. 4 2 = 0 is p6(r) = 2x 64 O D. The sixth approximation of In sec 2x about x + 45 f(m)() O E. tan x = n! 0. x" expanded about 8 TL f(") () 8. O (--)" expanded about 8. F. tan 2x = n! 8. 32 = 0 is p4 (a) =1+ 4x? + O G. The fourth approximation of sec? 2a about e 160 is p4(x) = 1+ 4(x 8 )+ 8(x -+ 64 2). H. The fourth approximation of f(x) about a = 8. 8. 8 8. 64 8. OI. The fifth approximation of f(x) about e 0 is p5(x) 2x + 3 15 160 32 .3 +. J. The fourth approximation of f(x) about = 0 is p4 (x) = 1+ 4x + 8a + 4 4 3 32 +. 45 K. The sixth approximation of In sec 2x about x = 0 is p6(x) = 2x + +.