Camila Cabello 11,450 Posted April 1, 2015 Share Posted April 1, 2015 I need help with integrals I'm having trouble understanding these 2 questions can someone help explain and walk me through them ? Thanks! Link to comment Share on other sites More sharing options...
byeol 8,270 Posted April 1, 2015 Share Posted April 1, 2015 Ewww maths Link to comment Share on other sites More sharing options...
abra 40,910 Posted April 1, 2015 Share Posted April 1, 2015 I've never been taught integrals But isn't it the opposite of derivates? Link to comment Share on other sites More sharing options...
Inetrica 512 Posted April 1, 2015 Share Posted April 1, 2015 7 is the area between the given parabolic function and the x-axis from x = 2 to x=5 6 without the 0-4 is like, find the general integral function, so your solution should be a function, but when given the 0-4, you're supposed to plug in the 4 and 0 into F(t) to get a numerical solution Link to comment Share on other sites More sharing options...
pandacub 2,061 Posted April 1, 2015 Share Posted April 1, 2015 Wouldn't the difference be that there are limits present on the second one? Link to comment Share on other sites More sharing options...
le youth 3,400 Posted April 1, 2015 Share Posted April 1, 2015 I gotchu. For the first one: The integral on the left is an indefinite integral, where you solve for a function. The integral on the left, since it has an upper/lower bound, is a definite integral, in which you solve for a number. I'm too lazy to do the second one by hand, but you can algebraically solve the integral by integrating each part of the function in parentheses and then substitute the bounds and subtract the lower bound from the upper bound. Graph (-x^2 + 6x - 7) and shade the area under the curve to show the geometric aspect of it. Link to comment Share on other sites More sharing options...
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