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myko
 2 years ago
Best ResponseYou've already chosen the best response.0you have the solution with the explanation, so what else do you need?

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0I have a sample problem. I've tried applying the steps to the actual problem but it's confusing.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1So instead of substituting 6 and 1 into the v's, you'll substitute 5 and 2.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1The substitution takes place at the part where the expression is in square brackets. [ ]

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1You'll plug in 5 first and evaluate. Keep that answer on the side somewhere. Then you'll go back to the square brackets again, plug in 2 and evaluate. Whatever you get as the answer, you'll subtract that from the answer you got when you plugged in 5.

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0Can you wait while I do it, and tell me if it's correct?

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0I got 77.5 when I plugged in 5.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1There's an extra negative sign next to the red negative sign. Ignore the extra one.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1\[{3(5)^{2}\over 2}+6(5)\]

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, so if I plug in 1, I'll get 3/2+8 = 6.5

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Look at the equation I wrote above.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1What do you get when you evaluate that expression?

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0Oh, I forgot to square it.

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0Then I get: (7.5+4.5)  (3/2 +8) = 9.5 or 19/2.

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0It's not correct though.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1You're doing more than what it's asking for. The only values you're evaluating are 5 and 2. Not 6 and 1.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.16 and 1 are solely used in the example.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1You never answered my question. What do you get when you evaluate the expression I wrote above?

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Awesome. Now imagine the 5 is gone and a 2 is in its place in the expression above. What do you get now?

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Replace BOTH 5s with 2s. Not just the one on the left.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Perfect. Now the last step is subtracting that 6 from 7.5: 7.5  6 =

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0But if you look at the sample problem, they subtracted another part too.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1They subtracted the value of the expression when a 1 was plugged in. We subtracted the value of the expression when a 2 was plugged in.

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0I got 8 and it's still wrong.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.18 on which problem?

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Ugh. It's + 8 not +6

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1\[{3v ^{2} \over 2}+8v\]

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Answer: 7.5 or 15/2

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Sorry. I thought the expressions were the same in the example and actual problems.

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0It's okay. Can you help with another problem?

hiralpatel121
 2 years ago
Best ResponseYou've already chosen the best response.0If you're not busy?

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Start off exactly as the example starts by dividing u and 4 by the square root of u. This gives you: \[\int\limits_{1}^{9}u ^{1/2}4u ^{1/2}\]

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Then integrate each term.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1\[[{2 \over 3}u ^{3/2}8u ^{1/2}]\]

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Plug in 9 first, and evaluate. Plug in 1 afterwards, then evaluate. Subtract the second answer from the first one.

coreylvaughn
 2 years ago
Best ResponseYou've already chosen the best response.1Take care and don't forget to mark a Best Response. Thank you
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