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How i want to sketch the graph of r(t) = cos(2t)i + sin(2t)j + 4k :uhoh: <div_prefs id="div_prefs"></div_prefs>

thanks :jump:

the answer is y sin(xy)...

let say i have 1st i treat y as constant and i integrate cos(xy) is that correct?

yes the answer is correct.. i dont understand from solution row 1, if im not wrong i must integrate exponent n let x as constant, is that correct?

pls help me solve this question.:confused: <div_prefs id="div_prefs"></div_prefs><div_prefs id="div_prefs"></div_prefs><div_prefs id="div_prefs"></div_prefs>

if i have double integral Example

after i refer the real answer from my book, the answer is only 1/2.. :confused: <div_prefs id="div_prefs"></div_prefs><div_prefs id="div_prefs"></div_prefs><div_prefs id="div_prefs"></div_prefs>

i know that is simple question, but im confuse to solve this integaral..but i will try..thanks

thanks everyone i think i can do..

How to integrate x/(1+x^2) dx ?? <div_prefs id="div_prefs"></div_prefs>

math~ solve who can solve this prob <div_prefs id="div_prefs"></div_prefs><div_prefs id="div_prefs"></div_prefs>