2 years ago

What am I doing wrong in step 5?

Mathematics

1 answer:

Norma-Jean [14]2 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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