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OpenStudy (anonymous):
k so vector = <7x, sqrt ( 39 - 49x^2) > Find r dot r'(0)
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OpenStudy (anonymous):
Should be easy dunno why this program isn't accepting it. derivative = <7, -49x\[\sqrt{39-49x^2}\]> then just multiply them together no? i got 49x but it doesn't accept
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