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marcelie

  • one year ago

Help Please !!!!!!! Can someone please check my work.. I dont know how find x/ y intercepts. I need help sketching it I have atatched my work in an image . :)

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  1. Astrophysics
    • one year ago
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    To find x - intercept, simply let y = 0 and solve for x. To find y - intercept, simply let x = 0 and solve for y. Sure, upload the image.

  2. marcelie
    • one year ago
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    okay. im about to uplaod image

  3. marcelie
    • one year ago
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  4. Astrophysics
    • one year ago
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    Almost right, looking at the x - intercept, first thing, you don't have to put base e when you put "ln" that already means it's to base e. Also, your last step is wrong, you're dividing by -1 when you should just subtract by -1 on both sides so you have \[x=e^{-6}-1 \implies \frac{ 1 }{ e^6 }-1\], your y - intercept is correct though, so good work.

  5. marcelie
    • one year ago
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    oh okay. so for the x int is there a way to solve by hand . i solved it by the calculator

  6. Astrophysics
    • one year ago
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    No, just leave it as it is, your teachers don't expect you to do know it as decimal form

  7. marcelie
    • one year ago
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    oh okay. about the y intercept is there a way to solve it by hand ?

  8. Astrophysics
    • one year ago
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    I don't really know what you mean

  9. Astrophysics
    • one year ago
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    the y - intercept is -3

  10. marcelie
    • one year ago
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    oh bc i want to solve the equation by hand for y= -1/2 ln (0+1) -3 inorder find the y int .

  11. Astrophysics
    • one year ago
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    You already solved it for the y - intercept, you got y = 3

  12. Astrophysics
    • one year ago
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    y=-3*

  13. Astrophysics
    • one year ago
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    You already solved both x and y intercepts, that's what your work showed..

  14. Astrophysics
    • one year ago
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    You just had made an error while you solved the x - intercept which I fixed for you

  15. marcelie
    • one year ago
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    yes i solved it by using the calculator. but is there a way to solve it by hand instead of using the calculator

  16. Astrophysics
    • one year ago
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    You mean the algebra...?

  17. Astrophysics
    • one year ago
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    You should be doing that by hand

  18. marcelie
    • one year ago
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    yes. that was my question. how do i solve it by hand bc i have trouble

  19. Astrophysics
    • one year ago
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    Those are the steps you use to solve it by hand

  20. marcelie
    • one year ago
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    yes that was for the x intercpt. but im asking how do i solve the y int by hand ?

  21. marcelie
    • one year ago
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    |dw:1443849411183:dw|

  22. Astrophysics
    • one year ago
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    Ah haha

  23. marcelie
    • one year ago
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    yes lolz

  24. Astrophysics
    • one year ago
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    set x = 0, and note ln(1) = 0

  25. Astrophysics
    • one year ago
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    it's that simple

  26. Astrophysics
    • one year ago
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    if you look at the graph, ln(1) = 0

  27. marcelie
    • one year ago
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    so any thing to the 1 for ln is always 0 ?

  28. Astrophysics
    • one year ago
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    just ln(1) = 0

  29. marcelie
    • one year ago
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    oh so i just plug it into the calculator then when its ln ?

  30. Astrophysics
    • one year ago
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    |dw:1443849650346:dw|

  31. Astrophysics
    • one year ago
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    You don't need a calculator!

  32. Astrophysics
    • one year ago
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    You should know that ln(1) = 0

  33. marcelie
    • one year ago
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    ah okay. i barely started learning the logs yesterday z

  34. Astrophysics
    • one year ago
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    Ah ok

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