2021年4月消费经济学
卷面总分：分
试卷年份：2021.04
是否有答案：有
假设对皮鞋的需求收入弹性，短期为0.1,长期为0.3。如果收入下降30%，这对皮鞋的需求量在短期和长期有何影响?此外,短期内收入。上涨多少,才能使皮鞋的消费量增加5%?(要求写出公式)
Fatal error: Uncaught Error: Call to a member function fetch_array() on boolean in /www/wwwroot/www.shzkw.org/phpcms/libs/classes/db_mysqli.class.php:153
Stack trace:
#0 /www/wwwroot/www.shzkw.org/phpcms/model/get_model.class.php(30): db_mysqli->fetch_next()
#1 /www/wwwroot/www.shzkw.org/caches/caches_template/default/content/yzb_exam_detail.php(153): get_model->fetch_next()
#2 /www/wwwroot/www.shzkw.org/phpcms/modules/yzb/exam.php(291): include('/www/wwwroot/ww...')
#3 /www/wwwroot/www.shzkw.org/phpcms/libs/classes/application.class.php(31): exam->detail()
#4 /www/wwwroot/www.shzkw.org/phpcms/libs/classes/application.class.php(19): application->init()
#5 /www/wwwroot/www.shzkw.org/phpcms/base.php(134): application->__construct()
#6 /www/wwwroot/www.shzkw.org/phpcms/base.php(85): pc_base::_load_class('application', 'libs/classes', 1)
#7 /www/wwwroot/www.shzkw.org/phpcms/base.php(76): pc_base::load_sys_class('application')
#8 /www/wwwroot/www.shzkw.org/index.php(15): pc_base::creat_app()
#9 {main}
thrown in /www/wwwroot/www.shzkw.org/phpcms/libs/classes/db_mysqli.class.php on line 153
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