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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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210__Functions of Several Variables__[Ch. 6<br />

1QR1 K<strong>in</strong>A dz dz &* d* 2 d * Z<br />

1951. Fmd, , l> , ,<br />

1952. /(*, y,z) = 0. Show<br />

1953. 2 = (p(x, y), where y is a function of x def<strong>in</strong>ed by the<br />

equation ty(x, f/) = 0. F<strong>in</strong>d ~.<br />

1954. F<strong>in</strong>d dz and d 2<br />

z, if<br />

1955. 2 is a function of the variables x and # def<strong>in</strong>ed by the<br />

equation<br />

if<br />

if<br />

2x* + 2y* -4- z* 8xz z + 8 - .<br />

F<strong>in</strong>d dz and d 2<br />

z for the values x = 2, f/^=0, 2^=1.<br />

1956. F<strong>in</strong>d dz and d 2<br />

2, if In z=jc + i/ 4-2 1. What are the<br />

first- and second-order derivatives of the function 2?<br />

1957. Let the function 2 be def<strong>in</strong>ed by the equation<br />

where (z) + o|> (2) satisfies the equation<br />

d*zf(<br />

1961. The functions y and 2 of the <strong>in</strong>dependent variable x are<br />

def<strong>in</strong>ed by a system of equations *2 +# 2<br />

2 2<br />

^0, x 2<br />

+ 2# 2<br />

+ 32 2 = 4.

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