Question

$\rm \red{Let \: f:(0,\infty)\to\R \: be \: continuous \: function} \\ { \rm \red{ \blue {such \: that}}} \\ { \rm \red{ \int_{0}^xf(t) \: dt = - {2} + \frac{ {x}^{2} }{2} + 4x \: sin \: 2x + 2 \: cox \:2 x }} \\ \rm{ \green{then \: the \: value \: of \: \frac{1}{\pi}f( \frac{\pi}{4} ) \: is}}$​

Answer 1

Answer:

1/4

Step-by-step explanation:

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