Express $\int _ { 4 } ^ { 64 } [ \sin ( \pi x ) ] d x$

Q156: Find the value of the integral

Q157: The velocity of a particle moving

Q158: Find the value of the integral

Q159: Estimate <span class="ql-formula" data-value="\int _

Q160: Find the value of the integral

Q162: Let f (x) = <span

Q163: Let <span class="ql-formula" data-value="f (

Q164: Let <span class="ql-formula" data-value="f (

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Q166: Find the value of the integral