# Math2

. The acceleration of a particle moving back and forth on a line is
d².s/d.t² .π²cosπ.t m/s² at any time t. If s=0 and v=8m/s when t=0 ,find s when t=1sec..

2.find the equation for the tangent line to the curve at the point defind by ralue of t.also find d²y/dx² at the point x=sec.t,y= tan.t,wheret=π/4..

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