For the PRO version of the desktop WolframAlpha, there is a charge $6.99 per month (on a month by month basis) and I'm not sure whether the quote is for United States or Australian dollars. However, the mobile version of WolframAlpha seems to offer some, perhaps all, of the features of the desktop PRO version for a one-off cost of A$4.99. Whether it's totally equivalent to the PRO version or not I'm not sure but it certainly provides the step-by-step solutions that the former offers.
Anyway, I've made the mobile purchase and am experimenting with it. I tried the step-by-step solution to integrating ln(x^2+1) and it's displayed in the mobile app but I can't see how to copy it. Screenshots can of course be taken and this is what I've done below. The result is OK I guess.
Anyway, I've made the mobile purchase and am experimenting with it. I tried the step-by-step solution to integrating ln(x^2+1) and it's displayed in the mobile app but I can't see how to copy it. Screenshots can of course be taken and this is what I've done below. The result is OK I guess.
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