$\text { Find the indefinite integral } \int 3 x ^ { 4 } \cos 8 \pi x ^ { 5 } d x \text {. }$

question 1

Multiple Choice

$\text { Find the indefinite integral } \int 3 x ^ { 4 } \cos 8 \pi x ^ { 5 } d x \text {. }$

• A) \(\frac { 3 } { 40 \pi } \sec 40 x ^ { 4 } + C\)
• B) \(\frac { 3 } { 40 \pi } \sin 40 \pi \pi ^ { 4 } + C\)
• C) \(\frac { 3 } { 40 \pi } \sec 120 \pi x ^ { 5 } + C\)
• D) \(\frac { 3 } { 40 \pi } \tan 8 \pi x ^ { 4 } + C\)
• E)\(\frac { 3 } { 40 \pi } \sin 8 \pi x ^ { 5 } + C\)

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