• How do you highlight a range of cells, then enter a formula into only one without losing the others?

    I'm trying to set a matrix formula in a cell, and the answer will be a column vector. To get a column vector as the answer, first I have to highlight the number of cells that will be in the vector, otherwise the answer will only be generated in the cell with the formula. How do I highlight several cells in a column, then enter a formula into... show more
    I'm trying to set a matrix formula in a cell, and the answer will be a column vector. To get a column vector as the answer, first I have to highlight the number of cells that will be in the vector, otherwise the answer will only be generated in the cell with the formula. How do I highlight several cells in a column, then enter a formula into the first one without the others being automatically un-selected?
    Software · 2 years ago
  • How do you sign in to iTunes when it won't open a sign-in box?

    On my MacBook, I'm trying to log in to iTunes, but there's no response when I select Account>Sign In. Is this a wide problem just now?
    On my MacBook, I'm trying to log in to iTunes, but there's no response when I select Account>Sign In. Is this a wide problem just now?
    4 answers · Software · 2 years ago
  • Who here had a good start in astronomy thanks to John Dobson?

    My first decent scope and renewed interest after years. Vale and thanks.
    My first decent scope and renewed interest after years. Vale and thanks.
    4 answers · Astronomy & Space · 5 years ago
  • For those of you into The Beatles, what is your favourite song...?

    ...if you can narrow it down? I enjoy most of what they did in all their styles, but for me it's "Ob-La-Di". Full of hope and life, and the orchestration in their arrangement tops it off!
    ...if you can narrow it down? I enjoy most of what they did in all their styles, but for me it's "Ob-La-Di". Full of hope and life, and the orchestration in their arrangement tops it off!
    15 answers · Rock and Pop · 6 years ago
  • Am I wrong, or is it the book?

    (3^-n . 9^2n) / (3^[3n-2] . 27) This simplifies first to (3^-n . 3^4n) / (3^[3n-2] . 3^3). Call this step 1. Now, if I use the laws of indices to work it out straight from step 1, I get 3^(-n + 4n - [3n - 2] - 3) Step 2 = 3^-1 = 1/3 The book gives the answer answer as 1/243, which is 3^-5. That would be correct if, from step 2,... show more
    (3^-n . 9^2n) / (3^[3n-2] . 27) This simplifies first to (3^-n . 3^4n) / (3^[3n-2] . 3^3). Call this step 1. Now, if I use the laws of indices to work it out straight from step 1, I get 3^(-n + 4n - [3n - 2] - 3) Step 2 = 3^-1 = 1/3 The book gives the answer answer as 1/243, which is 3^-5. That would be correct if, from step 2, I SUBTRACT the 2. I added it because it's subtraction of a negative number. Am I correct, or have I missed something in working out the indices?
    Mathematics · 6 years ago
  • I once heard Nielsen owed a lot to Brahms . . .?

    How much was it, and did he pay him back? Sorry. That's older than plainchant, but irresistible given that last Beethoven/Mozart question.
    How much was it, and did he pay him back? Sorry. That's older than plainchant, but irresistible given that last Beethoven/Mozart question.
    1 answer · Classical · 7 years ago
  • Why does Google Earth have areas covered by a chequerboard pattern?

    I have OS-X version 10.5.8. In years gone by, GE worked fine. Now, large areas of the globe have a pattern of squares, with each square comprising a pattern of still smaller squares. The patterns are different shades of cerise. (Yes, I had to Google that. Any other bloke would call it pink.) Also, I've downloaded several times, but it always... show more
    I have OS-X version 10.5.8. In years gone by, GE worked fine. Now, large areas of the globe have a pattern of squares, with each square comprising a pattern of still smaller squares. The patterns are different shades of cerise. (Yes, I had to Google that. Any other bloke would call it pink.) Also, I've downloaded several times, but it always seems to finish up with version 5.2.1.1588, even though I checked the box for version 6.2. Anyone come across this?
    2 answers · Google · 7 years ago
  • Isn't it Christmas where you are?

    Turn it off and spend some time with your families. Humbug.
    Turn it off and spend some time with your families. Humbug.
    10 answers · Astronomy & Space · 7 years ago
  • Do you think Conrad Murphy was found guilty of Michael Jordan's death because of the asteroid?

    And what would Lance Armstrong do if he was still on the moon and it hit there?
    And what would Lance Armstrong do if he was still on the moon and it hit there?
    4 answers · Astronomy & Space · 8 years ago
  • Wha does the Italian (or Spanish?) term "gajo" mean, when describing how to play a passage of music?

    It's in a clarinet arrangement of Moskovski's Spanish Dance no. 2. The web translators give definitions that don't fit, except for one obscure one that said "major".
    It's in a clarinet arrangement of Moskovski's Spanish Dance no. 2. The web translators give definitions that don't fit, except for one obscure one that said "major".
    3 answers · Languages · 8 years ago
  • Has anyone read this report of a star being consumed by a black hole?

    I ask because of the image in this link. http://www.smh.com.au/technology/sci-tech/a-star-is-torn--and-it-doesnt-happen-all-that-often-20110808-1ij54.html It clearly isn't anything to do with an X-ray image of a distant galaxy. It looks like a stylized image from a doco on black holes I watched some years ago, which showed how a black hole... show more
    I ask because of the image in this link. http://www.smh.com.au/technology/sci-tec... It clearly isn't anything to do with an X-ray image of a distant galaxy. It looks like a stylized image from a doco on black holes I watched some years ago, which showed how a black hole may distort the background. (Anyone remember it?) That's just our own night sky in the background, isn't it?
    3 answers · Astronomy & Space · 8 years ago
  • Is the moon's libration great enough that the Earth can be seen to "rise" and "set" anywhere?

    This arises from someone's earlier question that got deleted while I was in the middle of answering it. The Earth in the moon's sky has a diameter of about 2 degrees of arc. Is the libration such that someone on the limb would see the whole disc rise above the horizon and sink below it?
    This arises from someone's earlier question that got deleted while I was in the middle of answering it. The Earth in the moon's sky has a diameter of about 2 degrees of arc. Is the libration such that someone on the limb would see the whole disc rise above the horizon and sink below it?
    3 answers · Astronomy & Space · 8 years ago
  • An Unanswered Question . . .?

    Ives' "The Unanswered Question" to be precise. I heard this work for the first time at an orchestral concert (not a specially avant-garde concert, either). During the piece, after a diminuendo, the entire orchestra began playing and it was about a minute before I realised I was hearing Leonora no. 3, the final piece in the concert. It... show more
    Ives' "The Unanswered Question" to be precise. I heard this work for the first time at an orchestral concert (not a specially avant-garde concert, either). During the piece, after a diminuendo, the entire orchestra began playing and it was about a minute before I realised I was hearing Leonora no. 3, the final piece in the concert. It took me so long because I wasn't expecting it to start immediately. Does anyone know if Ives put a direction in "The Unanswered Question" for the next work to begin "attacca", or is this just the conductor thinking out of the box?
    3 answers · Classical · 8 years ago
  • Is supermoon the one that orbits Krypton?

    Or has somebody already thought of that one?
    Or has somebody already thought of that one?
    3 answers · Astronomy & Space · 8 years ago
  • When replacing bathroom taps, is it necessary to replace the copper "T-pipe" also?

    Replacing a tap which drips even when very tight, do I need to replace the entire set with what came in the tap kit? Or does "less-is-best" rule?
    Replacing a tap which drips even when very tight, do I need to replace the entire set with what came in the tap kit? Or does "less-is-best" rule?
    4 answers · Maintenance & Repairs · 8 years ago