WeBWork England MAT x C https://webwork.asu.edu MAT 267 Spring 2015/Section 13.6

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WeBWork England MAT x C https://webwork.asu.edu MAT 267 Spring 2015/Section 13.6/3/?showoldAnswers &display; Mode Math Jax&key; fPa8pE3gcxG84VxxU3Cl5Dtr a E /webwork2/England webw ork england mat 267 spring 2015 /section 13.6/3 Section 13.6: Problem 3 Prev Up Next (1 pt) For the surface with parametric equations r(s, t) st, s t, s t), nd the equation of the tangent plane at (2,3, 1) Find the surface area under the restriction s 2 I 1 t Note: You can earn partial credit on this problem. Review Answers Submit Answers You have attempted this problem 4 times Your overall recorded score is 0% You have unlimited attempts remaining mail instructor Exam IV Review WeBWorK: Engla Chegg.com Goo

Explanation / Answer

a) n = r_s x r_t = <-2, t+s, t-s>

At (x,y,z) = (2,3,1), we must have (s,t) = (2,1) (via algebra).
==> n(2,1) = <-2, 3, -1>.

Hence, the equation of the tangent plane is
<-2, 3, -1>

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