- #1
momogiri
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Question
f'(x) = 1.4x*cos(x^1.9)
Find f(x)
Attempt
Ok, first of all, I'm really bad at Calculus, so bear with me >__<
I figured to find the antiderivative of the thing is equivalent to
[tex]\int\left1.4x*cos\leftx^{1.9}\right\right)dx[/tex]
I've tried simple substitution (u = x^1.9) and that obviously doesn't work, and I tried integration by parts, but I don't think it's working
If I had dv = cos(x^1.9)dx
I'm unsure if I can find v when x is x^1.9
Help will be appreciated! Thanks!
f'(x) = 1.4x*cos(x^1.9)
Find f(x)
Attempt
Ok, first of all, I'm really bad at Calculus, so bear with me >__<
I figured to find the antiderivative of the thing is equivalent to
[tex]\int\left1.4x*cos\leftx^{1.9}\right\right)dx[/tex]
I've tried simple substitution (u = x^1.9) and that obviously doesn't work, and I tried integration by parts, but I don't think it's working
If I had dv = cos(x^1.9)dx
I'm unsure if I can find v when x is x^1.9
Help will be appreciated! Thanks!
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