Can anyone help on this question
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1.\tFind out the relationship of the figure. The distance between the boy and the heli is the hypotenuse. For right angled triangle, the 3 sides are related by sum of squares of the two short sides --> ……… theorem
2.\tGiven one side is changing at 25m/s , make this side x, and rate of change of x, dx/dt =25 m/s
3.\tGiven another side is constant, so the 3rd side is…. y= f(x)=theorem from step 1. find dy/dx
4.\tUsing chain differentiation, rate of change of y, dy/dt= dy/dx. dx/dt
5.\tpost back if you still need more clues. -
Hi,
Can explain more on how to form the y = f(x)? Thanks ! -
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Hi bluesclue,
what is the x value to sub in dy/dx ? thanks -
bluesky63:
X is the horizontal distance so x = 72 add required by questionHi bluesclue,
what is the x value to sub in dy/dx ? thanks -
pinkapple:
Thanks a lot... Got it !
X is the horizontal distance so x = 72 add required by questionbluesky63:
Hi bluesclue,
what is the x value to sub in dy/dx ? thanks