Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
在等差数列中, a_5 = 17 和 a_(10) = 32 。确定 a_1 和。
在等差数列中, a_5 = 17 和 a_(10) = 32 。确定 a_1 和。
Natural Language
Math Input
Extended Keyboard