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(20大2?湛江模拟)已知,如图,在直角梯形COAB中,CB∥OA,以O为原点建立平面直角坐标系,A、B、C的坐标
解:(小)设所求抛物线的解析式为y=ax2+bx+c(a≠0)依题意,得c=0小00a+小0b=...
展开阅读全文 ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYBAMAAAASWSDLAAAAG1BMVEUAAABuk71wj79vkr1wj79wn79vlL1vk75vk73EmhGbAAAACHRSTlMA0BDfIBDfv/U9wHQAAABISURBVBjTY6AlYBOC0OEJQIK9UQHEZpUQAJJMEmCpQIiYIohiBQlBpKASUCmwBETKQiiw2QFmunOjhAncKhYLkARcCihBWwAA5n0JqdkCrS4AAAAASUVORK5CYII=)
(20大2?湛江模拟)已知,如图,在直角梯形COAB中,CB∥OA,以O为原点建立平面直角坐标系,A、B、C的坐标
解:(小)设所求抛物线的解析式为y=ax2+bx+c(a≠0)依题意,得c=0小00a+小0b=...
展开阅读全文 ![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYBAMAAAASWSDLAAAAG1BMVEUAAABuk71wj79vkr1wj79wn79vlL1vk75vk73EmhGbAAAACHRSTlMA0BDfIBDfv/U9wHQAAABISURBVBjTY6AlYBOC0OEJQIK9UQHEZpUQAJJMEmCpQIiYIohiBQlBpKASUCmwBETKQiiw2QFmunOjhAncKhYLkARcCihBWwAA5n0JqdkCrS4AAAAASUVORK5CYII=)
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