在[tex=2.357x1.0]m5fKCA0WGhfJpuVc0VWfdw==[/tex]时有下述电池：[tex=12.786x1.5]qW2kHHzykwOIJrdXxRMppk+0QQq/bfHo9KJOwja1/FDPd1oiTXgpfniHZ7Zd1eooQGC9dTXGaOElr1N95muzbzacPydpEbJKoY4FOyy60BsdJLT3x3Rq7GaaAf/yBx5i[/tex]已知当[tex=1.286x1.0]svpjqIzcSd2qeE/v43QbUA==[/tex]浓度[tex=9.214x1.429]955ej0D6k4dSS/WN+rjzJbt8vAch0Aglr4t+kt9T7qse3WnMGi3RCCym+O4hns/y[/tex]时，[tex=4.643x1.286]jAa9GaZl6S+dlCjgRVHyCA==[/tex]，当[tex=7.429x1.429]dqbYT/SDyLLp6rCL45TfRNS12O+4HPkFU7REUL69RG4=[/tex]时，[tex=4.643x1.286]N3fzSOXDV3SJ5ds7TohY7A==[/tex]。电极[tex=5.714x1.5]bbLv1Pw2IHypWYpO/ti8KHwbGyuBBXaWGQyc4upv/8M=[/tex]的[tex=1.429x1.143]7GAjepi4kH+jZkAJCJ5uFg==[/tex]值为[tex=2.571x1.286]CqD7pspqsdAwS8OhWPDW7Q==[/tex],试求：[tex=1.286x1.0]svpjqIzcSd2qeE/v43QbUA==[/tex]溶液浓度为[tex=5.643x1.429]h8gFwV9km9Zp2sTuSVJePhkCu/+Hfpr1tyeHsJM13z0=[/tex]时的[tex=1.071x1.0]D/QP8ZEyKdofO+SlQYWefQ==[/tex]

2022-05-26

在[tex=2.357x1.0]m5fKCA0WGhfJpuVc0VWfdw==[/tex]时有下述电池：[tex=12.786x1.5]qW2kHHzykwOIJrdXxRMppk+0QQq/bfHo9KJOwja1/FDPd1oiTXgpfniHZ7Zd1eooQGC9dTXGaOElr1N95muzbzacPydpEbJKoY4FOyy60BsdJLT3x3Rq7GaaAf/yBx5i[/tex]已知当[tex=1.286x1.0]svpjqIzcSd2qeE/v43QbUA==[/tex]浓度[tex=9.214x1.429]955ej0D6k4dSS/WN+rjzJbt8vAch0Aglr4t+kt9T7qse3WnMGi3RCCym+O4hns/y[/tex]时，[tex=4.643x1.286]jAa9GaZl6S+dlCjgRVHyCA==[/tex]，当[tex=7.429x1.429]dqbYT/SDyLLp6rCL45TfRNS12O+4HPkFU7REUL69RG4=[/tex]时，[tex=4.643x1.286]N3fzSOXDV3SJ5ds7TohY7A==[/tex]。电极[tex=5.714x1.5]bbLv1Pw2IHypWYpO/ti8KHwbGyuBBXaWGQyc4upv/8M=[/tex]的[tex=1.429x1.143]7GAjepi4kH+jZkAJCJ5uFg==[/tex]值为[tex=2.571x1.286]CqD7pspqsdAwS8OhWPDW7Q==[/tex],试求：[tex=1.286x1.0]svpjqIzcSd2qeE/v43QbUA==[/tex]溶液浓度为[tex=5.643x1.429]h8gFwV9km9Zp2sTuSVJePhkCu/+Hfpr1tyeHsJM13z0=[/tex]时的[tex=1.071x1.0]D/QP8ZEyKdofO+SlQYWefQ==[/tex]

答案：

电池反应为[tex=18.071x1.5]3BEn1/c6uDwRlqaiU7EVXSzqRgl08t6GA8OQJnlV8iUzZgQeKRu7hfcML8AWdlDAUpAGZShU9iKeF+MfDJC8rmqkWhudKokwSoa0etZgyXQ=[/tex]电池的电动势为：[tex=20.857x2.929]AdiWiw2xFKFdVAcNttGGCoQpTtssrHnSifLu9epZsixd/qUAD8w+ubnw5xHOQpJ8rsl+5ykezK3mwZ4x0YX6KndmINuTlRbqLrgobKl6pXxbRdVE61MLc0pj60hmETgbtc6bTt0eSgYCuH+gEaGI0ACyuv0155N2EEunEJeRWyX28+JuRctPD33obUeJ1MivgNwANEBKEWYsuwXBlkGi+Rnu1awZRMvomVV/S/Vf0BQ=[/tex]当[tex=8.786x1.429]vmlfbW/OKoMvJQiim7jdj87Z1nA7SvKu7uv4l/QQzBg=[/tex]时，设[tex=2.357x1.214]6A3LrecuiWwCiW+5GY1+cg==[/tex]，则[tex=31.786x2.929]Dvef2tciEhdOhna1WaqAsamx/Ic22Lzq2C/Sl/U2+6CAqC2gYaE3Gnv4NK1ewzMwl5kT1lIGqeiVGecwDCw8y6kz5I9ie5S5T4Fc6Z/um3mWNedMd9CF/mdb0KyQiwzDqsfrL+bWyDbYTvY8bIjVjXt3Hetmds0feY2pNv60y+WPLXBvaIh6dFiQ68HecQAZfM1IFDZC/XvALNc/dhFCrqW8RIVWPqW4xKf7vAo7Os86g+YimdxweV0+564M6q4K[/tex]当[tex=7.286x1.429]4/VCoCCZlc3r0aX5eqJroR2IdxkZhA3Cjd8InJ6720o=[/tex]时，[tex=34.0x4.071]Uhu2/1bhRl3dw2iQmc0iyTIteXjMa+ZwLIjMC8Ux3lMLxk90U8Xl04XvpvjXFOEUhFjxb5fGA26y4+9b0yAWZqv0Vj5ZazyTA73nu1k6RXqWXUCSXBAqsNlS07mu1XtSvjUNl0b48fA1oIM+bwxzEGW64a5yFQGGfpiTWdBy+ncUlvIAaq09nxL+tz80dS4fJglTTq7s1c7FhUPouOkAVJosToMr62xuMOG4ojcW70xrvR6UpX9X5KxTY+DFIjxN1RpGq0iJzeDsWEsp2hLWCPXJXbAAsR0Wvdqq1Ej0l1c=[/tex]

举一反三

内容

0
判断下列命题是否为真：（1）[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex]（2）[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex]（3）[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex]（4）[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex]（5）[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex]（6）[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex]（7）若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex]，则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex]（8）若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex]，则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
1
【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
2
若要将一个长度为N=16的序列x(n)重新位倒序,作为某一FFT算法的输入,则位倒序后序列的样本序号为( )。 A: x(15), x(14), x(13), x(12), x(11), x(10), x(9), x(8), x(7), x(6),<br/>x(5), x(4), x(3), x(2), x(1), x(0) B: x(0), x(4), x(2), x(6), x(1), x(5), x(3), x(7), x(8), x(12), x(10),<br/>x(14), x(9), x(13), x(11), x(15) C: x(0), x(2), x(4), x(6), x(8), x(10), x(12), x(14), x(1), x(3), x(5),<br/>x(7), x(9), x(11), x(13), x(15) D: x(0), x(8), x(4), x(12), x(2), x(10), x(6), x(14), x(1), x(9), x(5),<br/>x(13), x(3), x(11), x(7), x(15)
3
求下列函数的单调区间、凹凸区间、极值点、拐点和渐近线,并绘图(图略).(1) [tex=6.643x1.5]bfylM61K4fB2dxr0OSsfGnNoGCHA31PVTv+V6O1K8rw=[/tex](2)[tex=7.643x1.571]v8BogKFXW30N+HMJ7QR6DhxEDs5D0riUpoj095rhlGc=[/tex](3) [tex=3.714x2.143]X1YpNX45Pb+t3RD9Lv2Xa/npVx6iPUE04M2Y4K2k/cw=[/tex](4) [tex=5.071x3.0]4TWEbfJ+QFPbBo6PXWTsCrjc66tVrHBOTlDUBxhSpARz8/MfCO/nUo/gE3SyIffw[/tex](5)[tex=6.571x2.429]gt+k1kCw/+VFBVaKddmG6PvDvxiTdyZFXDwIPBeuGlw=[/tex](6)[tex=5.643x1.429]Hzyd6Qvm69qjRqgBIuKTx/cTmFyy56Dt2K/GC7NoCdc=[/tex](7) [tex=7.143x1.214]CwtdUElTamN1NqF0aKHeWGdaXEazoOnz3w3c67izzuE=[/tex](8)[tex=4.714x2.786]cxjZEag+Wbr67lAUIC3Slk2OV17yHgezOhFRferr5F0=[/tex].
4
求函数[tex=3.286x1.429]kdT+eIE7CHPynuN6CaN40g==[/tex]（抛物线）隐函数的导数[tex=1.071x1.429]BUw1BPFU3fsJlAl/vt9M9w==[/tex]当x=2与y=4及当x=2与y=0时,[tex=0.786x1.357]Hq6bf3CacUy07X+VImUMaA==[/tex]等于什么?