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I need help with the problems, Please help me to solve this.

3-1.pngI need help with the problems, Please help me to solve this.


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1) ​ 2 ​ ​ 1 ​ ​ + e ​ − x ​ ​ ( 1 + x )... View the full answer

  • For question2, to find PI, CosX^2=((e^2+e^-x^)/2)^2, here we do square for both side, then we got this. But the answer you give me next is (cosx)^2=(e^2x+e^-2x)/4, I think the you forgot 2 on the right side. Can you check that?
    • y648867346
    • Jan 13, 2018 at 4:46pm
  • And I have a question, for question 1 we got y= ​​1/2 ​​ +e^ ​−x *​​ (1+x)−e^ −2x, here if we let x=0, y does not equal 0 but the question said y(0)=0. ​​
    • y648867346
    • Jan 13, 2018 at 5:08pm

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