A particle is moving along the curve ve...

A particle is moving along the curve `vec r( t ) = cos tbari +sin t barj +tbark` , starting at t = 0. Then its velocity and speed at time `t = 0` are given by

`barj,sqrt2`

`-barj+bark,sqrt2`

`barj+bark,sqrt2`

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XII BOARDS PREVIOUS YEAR-CUET MOCK TEST SET 1-PART – B (SECTION – III MATHEMATICS )

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