If f x = sin cosh x 2 + 1 x 2 + 2 then f ' 1 =

Question

If f x = sin cosh x 2 + 1 x 2 + 2 then f ' 1 =, 2 9 sin h 2 3 cos cos h 2 3, sin h 2 3 cos cos h 2 3, 2 9 cos cos h 2 3, 2 9 cos h 2 3 cos sin h 2 3

MARKS App · Accepted Answer

f x = sin cosh x 2 + 1 x 2 + 2 f ' x = cos cosh x 2 + 1 x 2 + 2 × sin h x 2 + 1 x 2 + 2 × x 2 + 2 2 x - x 2 + 1 2 x x 2 + 2 2 f ' x = cos cosh x 2 + 1 x 2 + 2 × sin h x 2 + 1 x 2 + 2 × 2 x x 2 + 2 2 f ' 1 = cos cosh 2 3 × sin h 2 3 × 2 9

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