Derivative of two equations

P-isabel

New member
Joined
May 17, 2019
Messages
3
I need help to find dy/dx of the two following:
x(t)=3cos(4t)
y(t)=5sin(3t)

I know that:

x(t)=3 cos(4t)
d/dt= -12sin(4t)

and
y(t)=5sin(3t)
d/dt =15cos(3t)
 

Dr.Peterson

Elite Member
Joined
Nov 12, 2017
Messages
3,847
So that means its--> 15cos(3t)/-12sin(4t)
Yes, but write that more carefully, with parentheses, (15cos(3t))/(-12sin(4t)), and simplify it a bit (canceling a common factor). There's not much more you can do.
 
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