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4. Find dy (i)y=(8r4 – 4x² + 1)15 (50 Points) (ii)y=tan't y = 15(8.0+ – 4.rº + 1)14(32x3 – 8.) y' = 2tanzsecx (iii) y = er?–40+1 (iv) g = (2x2+5)/n(4x +cº+10) y = er-40+1 (2.1 – 4) y = (2.x2 + 5) 27677210 + 4.cln(4.r+ + x² + 10) (u)y= 22 (vi) 4.xºy3 + 6y - 2x + 10 = 0 Iny = ln(x") = xlnt 4x3y’y + 12x²y3 + 6y - 2 = 0 Differentiating, (12.rºy? +6)y = 2 – 12x+y3 y = x x + Inc y' = 127 y = y[1 + Inx] = x"[1 + Inx]
