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seraphim [82]
3 years ago
11

What am I doing wrong in step 5?

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Step-by-step explanation:

t = 9x, and dx = 1/9 dt.

∫ sin(9x) dx

= ∫ sin(t) (1/9 dt)

= 1/9 ∫ sin(t) dt

= -1/9 cos(t)

= -1/9 cos(9x)

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