If the noraml to the continous curve y=f...

If the noraml to the continous curve `y=f(x)"at" P(x_(1),y_(1))` makes angle `psi` with the positive direction of x-aixs. Then-

`((dx)/(dy))_(((x_(1),y_(1))))= tan psi`

`-((dx)/(dy))_(((x_(1),y_(1))))= cot psi`

`-((dx)/(dy))_(((x_(1),y_(1))))= tan psi`

`((dx)/(dy))_(((x_(1),y_(1))))= -tan psi`

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CHHAYA PUBLICATION-TANGENT AND NORMAL -MULTIPLE CHOICE TYPE QUESTIONS

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