Monday

April 21, 2014

April 21, 2014

Posted by **Lucy** on Monday, February 27, 2012 at 12:53am.

z= x^2 + y^2, x=sin(2t), y=cos(t)

- cal3 -
**Steve**, Monday, February 27, 2012 at 12:10pmz = x^2 + y^2

dz/dt = 2x dx/dt + 2y dy/dt

= 2sin(2t) * 2cos(2t) + 2cos(t) * (-sin(t))

= 4cos(4t) - sin(2t)

for dz/dt=0, check wolframalpha and enter

**solve 4cos(4t) - sin(2t) = 0**

**Related Questions**

Please help for my test CALculus - using the chain rule find the min and max ...

Calculus - How do I use the chain rule to find the derivative of square root(1-x...

MoRe HeLp PlEaSe!! (calc) - Also can I get some help with this LONG, TIRESOME ...

Product Rule - Can someone please help me with this? f(x)=(x-2)^1/2 * (x^2-3)^3 ...

Calc - I'm creating a "calculu for dummies" project book. I've already done most...

Math - Calculus Question. - hey can someone explain to me the relationship ...

calculus - y=5/x-3 find the zeros,relative min and max.the max and min find the ...

calculus - Please help. Applying the chain rule, how do I find the derivative of...

cal3 please help! - Use Lagrange multipliers to find the max/min values of the ...

MAth - If 1 gallon (gal) of water weighs 8.34 pounds (lb), how much does 3.75 ...