Students’ understanding of the relation between tangent plane and directional derivatives of functions of two variables
2017 ◽
Vol 46
◽
pp. 13-41
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1998 ◽
Vol 220
(2)
◽
pp. 562-570
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Keyword(s):
1985 ◽
Vol 23
(4)
◽
pp. 566-583
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Keyword(s):
1990 ◽
Vol 66
(3)
◽
pp. 489-502
◽
2005 ◽
Vol 50
(5-6)
◽
pp. 947-955
Keyword(s):