Verify the integration formulas in Exercises 37–40. sech x dx = tan'(sinh x) + C 37. a. sech x dx = sin-'(tanh x) + C b. 1 - x² + C x sechx dx = 38. -sech¯lx x² – 1 -coth¬1, | x cothx dx x ++ C 39. tanhx dx = x tanh'x + ;In(1 – x²) + C 40.

Calculus: Early Transcendentals
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Verify the integration formulas in Exercises 37–40.
sech x dx = tan'(sinh x) + C
37. a.
sech x dx = sin-'(tanh x) + C
b.
1 - x² + C
x sechx dx =
38.
-sech¯lx
x² – 1
-coth¬1,
| x cothx dx
x ++ C
39.
tanhx dx = x tanh'x + ;In(1 – x²) + C
40.
Transcribed Image Text:Verify the integration formulas in Exercises 37–40. sech x dx = tan'(sinh x) + C 37. a. sech x dx = sin-'(tanh x) + C b. 1 - x² + C x sechx dx = 38. -sech¯lx x² – 1 -coth¬1, | x cothx dx x ++ C 39. tanhx dx = x tanh'x + ;In(1 – x²) + C 40.
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